If you mean 'First Step Trust', there's a reason they are cheaper and it's not because they are dodgy. It's an organisation which gives people who have been off sick a long time the chance to get back into work by building up their skills and experience and confidence. Although I don't know a huge amount about them, they are not a rogue company at all, in fact they do good work. I thought I'd just point that out because a lot of the comments will appear very unfair.
They're based on London Road.