Best Booster Seats Deals Online in the UK (25 Deals Found)

Last Updated - 22/03/2026 Sort By:

Best Choice
My Babiie

New
My Babiie MBCSB10 Booster Car Seat - Lightweight at 1kg, Approx. 6-12 Years (125-150cm, 22-36kg), R129, i-Size Backless
CHILD CAR BOOSTER SEAT: The My Babiie basic backless booster is suitable from 125-150cm (approx. 6-12 years, 22-36kg, Gr

£15.99 £17.95
COZY N SAFE

New
Cozy N Safe Neo 125-150cm i-Size Child Booster Seat, 22-36KG, Approx. 6-12 Years Old, Forward Facing, Removable Covers,
1. Conformance to Regulations: The 'Neo' booster seat conforms to the latest R129 Regulations, ensuring that it meets sa

£13.99 £14.94
New
Child Booster Seat Car Childrens Group 2+3 Safety Cushion Kids 3-12YRS (15-36KG)
The universal design is designed to fit 3 in a row in most vehicles. This booster cushion is lightweight and features a

£11.94
Best Value
Graco

New
Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 year
R129 highback booster car seat - Suitable from 100-150cm (3.5 to approx. 12 years)

£34.99 £40.00
New
Graco Junior Maxi™ i-Size R129 Booster Car Seat 3.5 to 12 Years
Weighing in at only 3.4kg, it is easy to install and move between vehicles, making it ideal for families on the go. To m

£35.92
My Child

New
My Child Brundle Group 2/3 Booster, Grey, 700 g
Padded seat cover and arm rests for comfort

£16.99
COZY N SAFE

New
Cozy N Safe Tambu Group 3 (22-36kg, 6-12 Years Old) Memory Foam, Lightweight Compact, Backless Booster Car Seat (Midnigh
Deep memory foam padding and armrest ensures your child in comfortable on both short and longer journeys

£12.99 £13.99
New
Graco Junior Maxi i-Size R129 Booster Car Seat 3.5–12 Years BN Box Marked
Brand new –packaging worn/torn/taped Graco Junior Maxi i-Size R129 booster car seat, suitable for children aged approxim

£34.99
My Child

New
MyChild Brundle Group 2/3 Booster, Black, 700 g
Padded seat cover and arm rests for comfort

£16.99
New
SPARCO UNIVERSAL CAR BOOSTER SEAT I-SIZE FOR 6–12 YEARS KIDS BLUE/GREY
SPARCO UNIVERSAL CAR BOOSTER SEAT I-SIZE FOR 6–12 YEARS KIDS BLUE/GREY.

£44.99 £79.99
Jovikids

New
Jovikids ISOFIX Car Booster Seat, i-Size R129, 125-150 cm (6–12 Years), Seat Belt Guide, Lightweight, Removable/Machine-
RELIABLE: The car seat is subject to strict controls to ensure the safety of children. It is approved according to the E

£24.99
17% Off
Graco

New
Graco Booster Basic R129 Backless Booster Car Seat, Lightweight at only 1.4kg, Suitable from approx. 7 to 12 years (135-
Lightweight backless booster

£17.99 £21.62
New
Adult Car Booster Seat Portable Car Seat Cushion for Driving Soft Seat Cushion
Say goodbye to discomfort like backaches, numb buttocks, and soreness. Well, fret no more! Our specially designed car se

£10.89
25% Off
Graco

New
Graco Eversure Lite R129 Backless Booster Car Seat, Lightweight at only 2.1kg, Suitable from approx. 7 to 12 years (135-
Lightweight and ready for any adventure

£14.99 £19.99
New
Cozy N Safe Tambu Group 3 (22-36kg, 6-12 Years Old) Child Booster Car Seat
The Cozy N Safe Tambu Booster Seat is perfect for families with multiple cars or grandparents, aunties & uncles. The boo

£13.99
Kinderkraft

New
Kinderkraft I-Boost 2 i-Size Car Booster Seat 125-150 cm, Ultra-Light, Comfortable, Safe, Ergonomic Armrests, Easy to In
i-Size car booster seat – for children 125–150 cm (approx. 6–12 years) – compliant with the latest R129 i-Size standard,

£16.90
New
Cozy N Safe Neo i-Size Booster Car Seat 125-150cm Child Seat Onyx
The Cozy N Safe Neo Booster Seat. This booster seat is designed for families with multiple cars or for use by grandparen

£14.95
New
Cozy N Safe Kea i-Size Booster Seat 125-150cm High Back Child Seat Onyx
The Cozy N Safe Kea Booster Seat. This booster seat is designed for families with multiple cars or for use by grandparen

£15.99
New
Toddler Booster Seat for Dining Table Thick Increasing Washable Cushion
[Toddler booster cushion can also be used as a booster seat in the children's room, living room, or even on an outdoor t

£9.95
New
Small Polystyrene Booster Car Seat 3-12yrs Child Group 2+3 (15 - 36kgs) Boy/Girl
15kgs to 36Kgs - 2 & 3 -Rear- or forward-facing child car seat (high-backed booster seat or. Suitable for ages 3 - 12yrs

£10.95
New
Graco Junior Maxi™ i-Size R129 Booster Car Seat 3.5 - 12 Years UK Legal VAN Kid
Weighing in at only 3.4kg, it is easy to install and move between vehicles, making it ideal for families on the go. To m

£37.49
New
Cozy N Safe Neo+ i-Size 125 to 150cm Child Booster Car Seat with strap guide
It installs quickly and easily in seconds using the vehicle’s 3-point seat belt, making it perfect for frequent vehicle

£14.99
New
Baby Travel Booster Seat w/ Tray Toddler Portable Folding Chair Indoor/Outdoor
Features:-Equipped with locking safety belts that attach to the chair to prevent serious injury from falling and sliding

£11.89
New
Pet Dog Car Seat Booster, Waterproof Puppy Travel Seat with Safety Belt, Foldabl
Keep your furry friend safe, comfortable, and stylish during every car ride with our premium Pet Dog Car Seat Booster. P

£15.99
New
Armchair Booster Cushion Seat Pad On Chair Riser Cushion 10cm THICK Waterproof
Add a comfortable boost to your armchair with this tie-on cushion from Motherland. Each thick and versatile patio chair

£18.11

25 Booster Seats deals are available from: Amazon, eBay stores, starting from £9.95.
The biggest discount we found is 25% on Graco Eversure Lite R129 Backless Booster Car Seat, Lightweight at only 2.1kg, Suitable from approx. 7 to 12 years (135-150cm), Ebony fashion at Amazon.
The lowest price we found is £9.95 while the highest is £44.99.
Prices for the best Booster Seats deals average at £19.59.
Last updated on March 22, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Booster Seats.