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

Last Updated - 01/02/2026 Sort By:

Best Choice
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)

£23.98 £24.99
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
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
Best Value
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)

£33.00 £40.00
COZY N SAFE

New
Cozy N Safe Astra i-Size 135-150cm Child Booster, 3-Point Seatbelt or ISO-Fix, Extra deep Foam-Padded seat and armrests,
The 'Astra' booster seat conforms to the latest R129 Regulations, ensuring compliance with safety standards.

£24.99
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

£29.99
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
30% Off
Bebeconfort

New
Bebeconfort Manga i-Fix Booster Seat ISOFIX, Car Booster Seat for 6 - 12 years Boys and Girls, 22-36 kg, 128-150 cm, Por
CAR BOOSTER SEAT: Manga i-fix is an isofix car seat Group 3, suitable from 6 years up to 12 years old (128-150 cm)

£27.99 £39.99
My Babiie

New
My Babiie MBCS75 Toddler to Booster R129 Child Car Seat - ISOFIX with Top Tether, Harness, 76-150cm (Approx. 9-36kg, 15
TODDLER & CHILD CAR SEAT: The MBCS75 grows with your child from 76–150cm (from appoximately 9-36kg, 15 months to 12 year

£59.99
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

£26.99 £29.49

10 Child Booster Seat Isofix deals are available from: Amazon stores, starting from £23.98.
The biggest discount we found is 30% on Bebeconfort Manga i-Fix Booster Seat ISOFIX, Car Booster Seat for 6 - 12 years Boys and Girls, 22-36 kg, 128-150 cm, Portable Car Seats for Kids, Comfortable, Compact, Lightweight, Tinted Black at Amazon.
The lowest price we found is £23.98 while the highest is £62.99.
Prices for the best Child Booster Seat Isofix deals average at £33.99.
Last updated on February 1, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Child Booster Seat Isofix.