Found this in my local today (cribbs causeway bristol) bargain price for a high back booster =)
still 25.00 online
From the moment your baby arrives, you realise that you want to protect him the best you can. The Nania Befix car seat helps you to keep your baby safe in the car and is classed as a group 2-3, making it suitable for children weighing between 15 and 33kg. A 5-point safety harness and reinforced side impact protection provides the optimum safety for your child. This Nania car seat is extremely lightweight, making it easy to move from car to car. The cover is removable and can be hand washed, helping you to keep you seat clean.