Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 1
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 2
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 3
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 1
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 2
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 3
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 1
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 2
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 3
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 1
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 2
Hill's Science Plan Senior 11+ Chicken || Hill's Science Plan || view 3

Hill's Science Plan Senior 11+ Chicken

£35.99 GBP
 per 

£3.99 Delivery (Orders up to £59.99)

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Certified and trusted products
Size: 3kg
Description

As cats age, they tend to become less mobile and less active, slowing the metabolism and weakening bodily defences. Nutrition is essential in meeting needs and avoiding unwanted weight gain.

Why your senior cat will benefit

  • Addresses slowing metabolism and reduced activity.
  • Helps avoid unwanted weight gain.

Features & specification

Delivered across the UK — free delivery on orders over £59.99.

Care

General Care & Storage
To get the most out of your Petszo delivery, please keep the following in mind:

  • Edibles: Keep food and treats tightly sealed and stored in a cool, dry environment.
  • Fabrics & Beds: Gently wipe clean or wash at 30ºC (always check the individual label first). Do not bleach.
  • Safety First: Regularly check toys and accessories for damage and remove them if broken.
  • Note: Always refer to the specific packaging for exact instructions.

Getting the most out of your Petszo order comes down to storing things properly and checking them regularly. Here's what matters.

Food and treats

Keep dry food tightly sealed in a cool, dry place away from direct sunlight. Resealing the bag or transferring it to an airtight container helps stop the fats going stale, which is the usual reason a dog or cat suddenly goes off a food they previously liked.

Opened wet food should be covered and refrigerated, and used within about 24 hours. Serve it at room temperature rather than straight from the fridge — cold food is noticeably less appealing to most pets and can be harder on sensitive stomachs.

Many treat pouches contain a small oxygen absorber sachet to keep the contents fresh. This isn't edible — remove and discard it before giving your pet the treat.

Beds, blankets and fabric items

Most fabric items can be gently wiped clean or machine washed at 30°C, but always check the individual care label first — padding and covers vary between products. Don't use bleach, as residue can irritate skin and paws.

Removable covers are worth washing more often than you'd think, particularly for pets with skin sensitivities.

Toys and chews

Check toys and accessories regularly for damage, and remove anything that's cracked, split or losing pieces. Small fragments are a genuine choking and blockage risk.

Always supervise your pet with chews and rawhide products, and take away any piece small enough to be swallowed whole. Match the chew size to your pet — a chew intended for a small dog won't last long with a large one, and creates more risk.

Harnesses, collars and leads

Check the fit periodically, especially on growing puppies and kittens. As a rule you should be able to slide two fingers comfortably under any strap — tighter risks rubbing, looser risks your pet backing out of it.

Inspect stitching, buckles and clips for wear, and replace anything showing damage before it fails on a walk.

Litter trays and small pet enclosures

Scoop clumping litter daily and top up as needed; a full change every 1–2 weeks is typical, more often with several cats sharing a tray. Clean the tray itself with hot water and mild detergent rather than strong disinfectants, some of which are toxic to cats.

For small pet enclosures, spot-clean soiled bedding daily and do a full change weekly.

Switching foods

Introduce any new food gradually over roughly 7–10 days, mixing increasing amounts into the current food. Sudden changes are one of the most common causes of digestive upset, and it's easily avoided.

Always check the product packaging. The guidance here is general — individual products carry their own storage, washing and feeding instructions, and those take precedence. If you're unsure about something, or your pet has a specific health condition, speak to your vet.

Questions about a specific product? See our FAQ or email support@petszo.co.uk.

FAQ

Frequently Asked Questions (FAQ)
We’ve compiled answers to the most common questions about shopping at PETSZO. Can’t find your question? Contact us at +44 7782 276061 or email us at support@petszo.co.uk.

1. What are your delivery times?
Orders are typically processed within 1–3 business days and spend 2–4 business days in transit. You can generally expect your order to arrive within 3–7 business days total. Once your order is dispatched, you will receive tracking information to monitor its progress.

2. What if my order is late?
While we strive for prompt delivery, carrier delays can occasionally happen. If your order does not arrive within the expected timeframe, please reach out to us. If a package is confirmed lost or significantly delayed by the courier, we will issue a replacement or a refund to ensure your complete satisfaction.

3. Can I return an item?
Yes. In compliance with UK Consumer Law, we offer a 14-day return period for most unused and unopened items in their original packaging. Please check our Refund & Return Policy for details and hygiene-related exemptions.

4. How can I track my order?
After your order is shipped, we will provide tracking details via email. You can use this information to check the delivery status directly with the carrier.

5. How do I contact customer support?
If you have questions about your order, shipping, or products, reach out to our support team:
Phone: +44 7782 276061
Email: support@petszo.co.uk

Answers to the questions we're asked most often. If yours isn't here, call +44 7782 276061 or email support@petszo.co.uk and we'll help.

Delivery

How long will my order take to arrive?

We aim to dispatch orders within 1–7 business days of you placing them. Delivery time after dispatch depends on the shipping method chosen at checkout. You'll receive tracking details by email once your order is on its way, so you can follow its progress with the carrier.

Do you offer free delivery?

Yes — delivery is free on all UK orders over £59.99. Orders below that threshold are charged at the rate shown at checkout before you pay.

Where do you deliver?

We currently deliver within the United Kingdom only. We don't ship internationally at present. Please note that a small number of items are shipped from outside the UK and may take a little longer to arrive — this is noted on the individual product page where it applies.

What if my order is late?

Carrier delays occasionally happen, particularly around public holidays or in bad weather. If your order hasn't arrived within the expected timeframe, get in touch with your order number and we'll chase it. If a package is confirmed lost or significantly delayed by the courier, we'll send a replacement or issue a refund.

How do I track my order?

Once your order ships, we email you tracking details. Use these to check live delivery status directly with the carrier.

Returns & refunds

Can I return something if I change my mind?

Yes. Under UK consumer law you have 14 days from receiving your order to tell us you'd like to cancel, and a further 14 days to send the items back. Items need to be unused, in their original packaging and in the condition you received them. Return postage for change-of-mind returns is at your cost. Full details are in our Refund & Return Policy.

What if my order arrives damaged or incorrect?

We'll put it right. Under UK law you have up to 30 days to reject a faulty item for a full refund. For transit damage, contact us ideally within 48 hours of delivery with photos of both the item and the packaging. We cover return postage on faulty or incorrect items and will offer a full refund or a replacement.

Are there items I can't return?

For hygiene and safety reasons, opened or unsealed pet food and treats, used grooming products, personalised items and gift cards can't be returned unless they're faulty.

How long do refunds take?

Once we've received and inspected your return, we'll let you know whether it's approved. Approved refunds are processed within 14 days of us receiving the goods, back to your original payment method.

Can I cancel an order before it ships?

Yes — email support@petszo.co.uk with your order number any time before dispatch. If it's already gone out, you can return it under the 14-day change-of-mind period once it arrives.

Products

Do I need a prescription for veterinary diets?

No prescription is legally required in the UK to buy veterinary diet foods. However, these products are formulated for diagnosed conditions, so we strongly recommend speaking to your vet before starting one — and having your pet checked at least every six months while feeding it. If your pet's health worsens, seek veterinary advice straight away.

How should I switch my pet to a new food?

Gradually, over roughly 7–10 days. Mix a small amount of the new food into the current one and increase the proportion each day. Switching abruptly is a common cause of digestive upset.

How do I store pet food once it's open?

Keep dry food in a cool, dry place, ideally resealed or in an airtight container to stop the fats going stale. Opened wet food should go in the fridge and be used within about 24 hours. Always check the individual packaging, as some products have specific requirements.

Contact

How do I get in touch?

Phone: +44 7782 276061
Email: support@petszo.co.uk

Please include your order number when contacting us about an existing order — it speeds things up considerably.

Shipping & Returns

Last updated: 16 August 2026

This policy explains how we process, dispatch and deliver orders, and what to do if something goes wrong.

1. Delivery charges

Delivery is free on all UK orders over £59.99. For orders below that value, the delivery charge is calculated and shown at checkout before you complete your purchase — you'll never be charged an amount you haven't seen first.

2. Order processing and dispatch

We aim to dispatch orders within 1–7 business days of the order being placed. Business days are Monday to Friday, excluding UK public holidays.

Once your order has been processed you'll receive a confirmation email, followed by tracking details where available.

3. Delivery times

Time in transit after dispatch depends on the delivery method selected at checkout and your location. Total time to receive your order is therefore the dispatch window above plus the carrier's transit time.

A small number of products are shipped from outside the UK and take longer to arrive. Where this applies, it is stated clearly on the individual product page.

4. Delivery area

We currently deliver within the United Kingdom only. We do not offer international shipping at present.

Please note that a small number of bulky items cannot be delivered to Northern Ireland. Where this restriction applies, it is noted on the product page.

5. Tracking your order

Once your order ships, we'll email you tracking information where available. You can use this to check the live delivery status directly with the carrier.

6. Delays

Some delays are outside our control — carrier backlogs, severe weather, and public holidays being the most common. If your order hasn't arrived within the expected timeframe, please contact us with your order number and we'll investigate.

If a package is confirmed lost or significantly delayed by the courier, we will send a replacement or issue a refund.

7. Incorrect delivery addresses

Please check your delivery address carefully at checkout. If you spot a mistake, contact us immediately — we can usually correct it before dispatch. Once an order has shipped to an address you provided, we may not be able to recover it.

8. Contact us

For any questions about shipping or the status of an order:

Phone: +44 7782 276061
Email: support@petszo.co.uk

Please include your order number — it makes everything faster.

Petszo is a trading name of UZMA QASIM LTD (company number 16856550). We reserve the right to update this policy; the date at the top of this page reflects the most recent revision.

See also: Refund & Return Policy · FAQ

Add to Cart Select The Options Above
  • 5 stars: 14 (70%)
  • 4 stars: 3 (15%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (5%)
  • 1 star: 2 (10%)
M
Mia
Elderly cat back to normal weight

Our elderly cat was losing weight but since starting on this food she is back to normal weight again and looking much fitter

H
Hannah
Cat loves it

My cat loves it she wants more only dry food she will eat loads of

D
Dave Warner
Great Product

My cat loved this product. Easy to reseal to keep fresh.

D
David Warner
Great Product

This is a great product. My Cat loved it. Packaging easy to reseal to keep fresh. I beleave the product to be healthy, and helps me feed my Cat a healthy diet. I received this product for free as part of a Home Tester Club product test.

B
Biliseta
My cat enjoys this food.

My cat has been eating this food for about 4 weeks now. I think he enjoys it as he is coming back to the bowl quite often. Great ingredients, tailored to order cats, this food is perfect for my 13 year old handsome boy. He's coat looks better, he seems to have more energy, and put on a bit of weight which is good. \nLarge packaging lasts a while. I received this product for free as part of a Home Tester Club product test.

K
Kiwczi
Amazing

Hill’s Science Plan Senior Dry Cat Food with Chicken worked amazingly for my older cat! He loved it, and the transition was super easy. His fur has become shiny and soft, and I even noticed his litter box smells better. Great quality food!

L
Lealubee
Great for the older cat

We were kindly gifted this food to try out, my cat is an old boy now so I love that it is tailored to him and his aging. He loved the food straight away took to it. I love that it is good for him and will help with keeping him fit and healthy, the kibble size is good ti for him to chew.

A
Angela82
Senior Pet Cat Food with Chicken

My cat has really enjoyed her Senior Pet Cat Food with Chicken from Hills Science Plan. I gradually transferred her over to it and she was happy to do this. She enjoys each meal and always eats it all. I received this product for free as part of a Home Tester Club product test.

K
Kornelija
Great

The kibble size is perfect for senior cats, and they seem to find it easy to chew. Both of my cats (13 and 14 years old) enjoy the taste, and their coats have become noticeably shinier I received this product for free as part of a Home Tester Club product test.

M
Marionjay
Hill's Science Plan Senior 11+ Chicken

My cat has been trialling this product for four weeks. He is a fussy puss, but he loves these biscuits. I like the texture/size, just right for the mature cat & think he loves the taste. I feed them in the morning for him to graze upon and he usually finishes his bowl each day. I would give these biscuits a thumbs up.\nI like the idea it is especially for a cat of older years, as Freddie is 13 now, so he gets all the nutrients he needs. Received this product for free as part of Home Tester Club

C
Cupcakebengal
Cat is happily eating!

Our cat has been happily eating this for the last 4 weeks. I obviously can't attest to the taste myself but it's being eaten! Nice, small sized biscuits. We've also seen a reduction in her vomiting, which is great news. I received this product for free as part of a Home Tester Club product test.

K
Kirstieg
Good!

My cat can be a bit fussy when we try him on a different food, but that wasn't an issue with this one. He ate all of his food and had been coming in for dinner earlier than usual, so he is definitely enjoying it! I like that the food is tailored to his needs as an older cat and is more beneficial than generic cat food. His coat has seemed shinier than usual too. Recommended. I received this product for free as part of a Home Tester Club product test.

T
Tracy Jones
Cat loves it

My cat absolutely loves it keeps coming back for more she seems to be more loving

t
tracyjonesy1972@gmail.com
Cat loves it

My cat loves it keeps going back for more got as part of home tester club I think I might buy different flavours

M
MARK
Hill's Science Plan Senior Dry Cat Food with Chicken 3kg

Hill's Science Plan Senior Dry Cat Food with Chicken 3kg bag Idea cat for my ageing cat nice size biscuit with strong chicken flavour started my cat on a little at first then biult up amount every day. Tommy enjoyed eating and ate most of it per serving Like it as it helps heart kidney bladder fuction and full of vitamin and omega will keep using as the bag size will last a long time and wil buy more in the future. I received this product for free as part of a Home Tester Club product test.

A
Amanda Bassra
Hill's Science Plan Senior 11+ Chicken

My two cats couldn't wait to dig into these biscuits!\n\nTheir bowl was cleared in no time; and these days they are very picky about their biscuits so that was a definite paws up from them! \n\nI received this product for free as part of a Home Tester Club product test.

N
Net
Love

Always buy Hills science diet my 3 love it

E
Emmz
Made my cat ill

Like some of the other reviewers, this made my cat have sickness and diarrhoea. He's been eating Science Plan dry food (light) all his life but as he's now a mature/senior cat he doesn't need the light option so I thought I'd try out something that might better meet his needs. Big mistake!

S
Simon C
Phoebe loved it but it gave her chronic diarrhoea

Phoebe is 16 but healthy, with no history of sensitivity to dry food, which is all she eats. I often change her food because she seems to enjoy a change. However, Hill's Science Plan Senior 11+ Chicken had her shitting McDonald's chocolate milkshake within about 3 days. Her stools became soft within the first day and got steadily worse. I put her back on the previous food (Applaws adult dry) and her poos were lovely and firm again within a couple of days.

K
Kaz doyle
unfortunately made both our cats sick

our 2 cats are 12 years old and Hill is usually one of their favourite brands. Unfortunately both cats were sick repeatedly when eating this. We tried swapping to another food for a week and back again and every time they ate this 11+ food they were sick again.after it. An expensive mistake to buy it on our part.