After much research and reading reviews and feedback on boilers , i decided on the Viessman from Heatable .....this was driven by a glowing review from Which and also a robust 10 year parts,labour and call out deal provided boiler is serviced annually (only available through Heatable!) . The price and package from Heatable was unbeatable with several other companies failing to get close . Fitting was quick and the fitter arrived on time and fitted the boiler with ease leaving the area perfectly tidy with all waste (old boiler and packaging ) taken away ... I can highly recommend Heatable .......use British gas if you like paying far more and only getting half the warranty !!!!!!!!!!!!