Ive seen a couple threads about the M1 on USA providers, and it doesnt look promising from what ive read. Is it going to be the same issue in the UK? I think I already know the answer I'm just hoping I'm wrong.
I just looked up UK frequencies, it appears that in the UK you use 900 MHZ and 1800 MHZ for GSM and 3G is on the 2100 MHZ band.
The M1 seems to be on the GSM 850/900/1800/1900MHz and WCDMA 850/1900/2100MHz. So it would appear compatible with UK frequencies. Perhaps someone who lives in the UK with a bit more knowledge can fill in the blanks here