Here is a link to the relevant page at Swift's website:
But yes, any attempt to search does not find them easily. There are several other vehicle rental firms called Swift which make it into the results ahead of them.
Edit: This extract from a Hardman & Co analysis dated 1 Dec makes only a passing reference to Swift's presence on the scene:
"..Encouragingly, Accident Exchange enters its second half trading period with a strong new account pipeline and we believe investors can look forward to more positive news on this front over the next few months. Watch out for more deals with vehicle manufacturers and the larger dealership groups such as Pendragon and Reg Vardy inparticular as Accident Exchange takes advantage of its size to aggressively chase referrals from higher up the distribution chain. The move into Scotland also looks interesting. Accident Exchange is not the only player in this market – Swift Renta Car, a smaller operator in the prestige vehicle niche has a presence in the region and Bristol and London (BTL.L) services its clients in Scotland and surrounding areas out of a depot in Warrington. Nonetheless management are confident of achieving a fleet size of between 250 – 300 vehicles by December 2005. Our view is that good progress in this area and on new dealership account wins will trigger further upgrades..."