We hear of an established ISP/Hosting Provider that has a couple of spare 2kW racks in THN, TFM3
These are available at £1350/month plus £500 set-up. Currently they are full Dell rack enclosures but can be replaced with racks of halfs/quarters if preferred.
Minimum twelve month contract, three months deposit.
E-mail firstname.lastname@example.org if any interest.