Brake Upgrades - BG Developments

Has anyone dealt with BG Developments in Bromsgrove UK for brake upgrades? I was passed on to them by AP racing. They seem to do a lot of bespoke and historic work. I've sent them an email about upgrading the Dax40 brakes to see what they say. There web site indicates that they do a lot of specialised work with classics and kit cars.
BG Developments web page
regards
Dave