Just bought the HSE 10-person first aid kit and am feeling pretty chuffed. If you go to www.medisave.co.uk you can order the refill pack for £5.59 and free postage. Then get a plastic box for pence at Asda/ Tesco etc to keep it in. Cheaper than paying £7 for the kit including the box then paying £2.29 p&p.
Just thought this info might come in handy.