I personally prefer to buy car seats I can physically take back if there's a problem so have opted for Halfords.
This car seat is currently reduced to £135 from £165 but only in black. This is also the mp3/iphone/ipad model which has speakers in the headrest and includes the cable to attach to the seat.
To get the car seat for £108, you can either use saferseat to receive a further 20% off in exchange for an old backless booster or go via topcashback and use B17CS02 to also receive 20% off (The latter excludes Maxi Cosi) and 3.45% cashback.
Please note that the codes can not be stacked.
More Info on the actual seat:
Recaro Monza Nova 2 High Back Booster Seat with SeatFix – Black
The Recaro Monza Nova 2 High Back Booster Seat with SeatFix - Black
can even be used in cars without the Isofix mounting points by simply sliding the SeatFix connectors into the seat, making it useable in almost any vehicle you are likely to travel in.
Its fixed armrest gives extra protection to the hip area.
The ventilated moulded foam, advanced side impact protection, headrest with 11 adjustable positions for head size and the unique passive RECARO Air Circulation System makes this RECARO Monza Nova SeatFix your child’s safest best friend
Recaro Monza Nova 2 High Back Booster Seat with SeatFix – Black Extra Info
Group 2, 3 car seat suitable from 15 - 36kg, 3 to 12 years approximately
Easy to install, integrated SeatFix arms fix to the Isofix mountings of the vehicle
Adjustable head rest cushion for additional depth and comfort
Integrated speakers in the headrest connect to an amplified MP3/audio source
MP3 player pocket in the side of the seat
Secured by the car's own 3 point seat belt the child will be safer in a side impact
Do not fit a car seat in a vehicle seat where there is an active airbag present
Check the seat fits your car correctly– Free fitting and demonstration at your local store
Complies to ECE R44/04 regulations
Free delivery and click and collect. Discount is still valid for collection