I am not sure where you would get blades in the UK. These guys <!-- w --><a class="postlink" href="http://www.tedpella.com">www.tedpella.com</a><!-- w --> sell them in the US. Single Edge, PTFE-Coated Blades are the ones i have.
As far as shaving goes you really do need to adhere to the no pressure as it could take some bark off. I find it easy to shave with and as the instructions say " shave with the door of the razor flat against your face. It really does do a good job.
Do you have the open comb model like mine?