No extra services, but I didn't sign-up expecting any. Service is reliable but less 3G coverage is outweighed by faster masts.
Never had a problem with support, UK based etc.
Highest speed acheived (10/10):
6.3Mb (Down)
1.44Mb (Up)
Overhead (error checking) eats up a lot of bandwidth, like with wifi you never acheive the full throughput (54Mbps for example).
Average: ~2Mb / 1.2Mb.
Upload is faster than my home connection.
Price/Speed is great, O2 and Three could never compete on this level.
UPDATE: Just got a phone contract with them, hopefully I can beat the max down/up speeds sometime.
Time With Provider:
Package Name: