Digital Printing Lab

I currently print some things on my inkjet photo printer and I send other off to PhotoBox to be printed. Now as good as the PhotoBox prints have been I want to use somewhere which will take advantage of the larger colour gamut that is possible. At the moment I have to use sRGB converted files for my printer and files I've sent off to get printed.

I originally chose PhotoBox because of ease of use, copyright and printing process used (Laser chemical printing)

I was hoping someone could point me in the direction of some other labs I could look at hopefully taking advantage of the colour information available.