I got some done for a work charity ride thing.
Ended up getting Tacx "Shiva" ones, which were nice enough - they were super cheap, but needed to order 500 of the bastards... Of which about 300 are in boxes in the basement at work. Ordered them through Applewhite Corporate Gifts. So you could look at running some Outliers mouse-mats at the same time? Tacx don't seem to take direct orders from the UK.
Looked at Camelbak and Specialized custom ones and they are both very good but were over a tenner each, which was beyond the limited budget. Not sure of their minimum order size though. See - http://www.specializedwaterbottles.com/customize-your-bottle