Does anyone know how stores like ASDA go about actually printing the photos?

A few years ago, the envolopes that they put the photos in said that they use 'the latest digital technologies' and both digital and film prints are done on Fuji Crystal archive paper.

All the 6x4 prints which I have had from asda I have found to be very good, but when I had a few digital photos done a few weeks ago and just now had my holiday photos done at 7x5, I was slightly dissapointed with the quality. Although it could just be the film. The photos are OK, but I think I will take some of the negatives to other places and get some more prints made to do some comparisons. Starange, because some 6x4 reprints that I had done at ASDA recently look btter than the original prints that I had made 10 years ago.

I also quite fancy having an SLR now as well.