Bosch Serie 2 Slimline dishwasher repair service

I have a Bosch Series 2 Slimline dishwasher that just stopped working. The power light goes on for a second or two then goes off I can't open the door either worked perfectly till this happened - I'm looking for someone who covers repairs for Bosch dishwashers and who guarantee their work. I'm in Enfield EN1 

Thanks