List Of Dedicated Providers With Private Or Virtual Private Racks

I am currently with the planet and am happy with them, however as part of a new venture I need to gather a list of hosts as well as the planet that will be able to cater to the ventures needs and go to tender with the requirements.

ThePlanet offer something called a virtual rack. This is cheaper than renting a dedicated rack, allows for Gb networking but doesnt not allow for a SAN. Do other providers offer something similar? The cost of putting a machine on the virtual rack is not that much more expensive than just renting the machine. I guess there isn't too much to these set-ups to be fair.

If not, then we are looking for dedicated racks, with the ability to host a SAN at some point, but starting off with say 3 servers (2 web servers, 1 storage server with raid5 6Tb of hdd). These servers will be dealing with network cameras although I don't think that many will be streaming at once but the network capacity does need to be there.

Who's door should I be knocking on to find out some prices?

One final thing, should I bother looking for co-lo providers as well? We are in the Uk but not precious about our host being in the same country at all (it would be nice but uk prices are ££). Really, all we would be able to do with co-lo is buy the hardware outright to save price as we are not interested in looking after the hardware.