Best Car Booster Seat Isofix Deals Online in the UK (10 Deals Found)

Last Updated - 02/05/2026 Sort By:

Best Choice
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
Best Value
My Babiie

New
My Babiie MBCSB20 Child Booster Seat - ISOFIX, R129 i-Size 125-150cm (Group 3, 6 to 12 Years Approx.) Portable Kids Car
CHILD CAR SEAT: The My Babiie MBCSB20 backless booster is suitable from 125-150cm (approx. 6-12 years, 22-36kg, Group 3)

£24.99 £29.99
Jovikids

New
Jovikids I-Size Booster Seat for Car with ISOFIX, 125-150cm (Group 2/3, 6-12 Years), Portable Car Seats for Kids, Conven
RELIABLE: The car seat is subject to strict controls to ensure the safety of children. It is approved according to the E

£21.99
14% Off
Graco

New
Graco Booster Max R129 ISOFIX backless booster seat, Lightweight at only 2.7kg, Suitable from 137-150cm (approx. 7 to 12
Backless R129 Booster suitable from 137-150 cm (approx. 7 to 12 years)

£34.56 £40.00
COZY N SAFE

New
Cozy N Safe Astra i-Size Booster Car Seat 135-150cm, ISOFix & Seat Belt Installation, High Backless Booster, Deep Padded
i-Size (R129) booster seat suitable for children 135–150cm (approx. 6–12 years)

£24.99
Littlesgo

New
Littlesgo IFix Booster Seat, i-Size ISOFIX Car Seat, for Child from 125-150cm (3-12 Years, Group 2/3), Portable, Triple
I-Size R129 Certified: IFix Booster R129 is rigorously tested to meet the EU's new i-Size R129.03 standards. More than 2

£24.99
Littlesgo

New
Littlesgo IFix Booster Seat, i-Size ISOFIX Car Seat, for Child from 125-150cm (3-12 Years, Group 2/3), Portable, Triple
I-Size R129 Certified: IFix Booster R129 is rigorously tested to meet the EU's new i-Size R129.03 standards. More than 2

£24.99 £26.99
34% Off
Walser

New
WALSER Premium children's booster seat car ISOFIX, child seat 125-150 cm, children booster car Andy latest standard 2024
HIGHEST SAFETY STANDARDS: The high-quality WALSER child car seat Andy ISOFIX complies with the latest child car seat sta

£44.95 £67.94
10% Off
Graco

New
Graco Affix i-Size R129 with ISOFIX Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 1
Forward facing i-Size R129 ISOFIX Highback Booster Seat - Suitable from 100-150cm (approx. 3.5 to 12 years)

£62.99 £70.00
11% Off
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

10 Car Booster Seat Isofix deals are available from: Amazon stores, starting from £15.99.
The biggest discount we found is 34% on WALSER Premium children's booster seat car ISOFIX, child seat 125-150 cm, children booster car Andy latest standard 2024 ECE R 129, booster child black at Amazon.
The lowest price we found is £15.99 while the highest is £62.99.
Prices for the best Car Booster Seat Isofix deals average at £30.54.
Last updated on May 2, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Car Booster Seat Isofix.