couple of things, first of all forefront, i've never worked for them so can't comment, but in my experience all agency staff or "recruitment consultants" as they like to call themselves couldn't lie straight in bed. They will say anything to get you to site, then baiscally your on your won. when they've got work they ring you up like your their best mate, when theirs nowt, you become persona non grata. They will slice money off the rate with no thought for the people who are going out to work for them, just to get the job and then chop the rate of the bloke going to work, so your taking the loss no them. They couldn't give a ******** about you as long as you get the timesheet signed. they're on a par with estate agents, double glazing salesman and vampires when it comes to integrity.
IMHO They are nothing but parasites who are fcuking the construction industry and are largely responsible for the influx of cheap foriegn labour and the derisory rates we are now working for. They haven't even got the decency to pay the men working for them their wages, They pay through a composite company and charge you £20 a week for the privilge.
Secondly, anyone starting up a labour only company today can expect the following. Clients not paying on time, blokes not turning up, the client poaching your men, long hours, little reward. you need PLI, which is expensive, a good understanding of the politics of scaffolding, the hide of a rhino and the paitience of jobe. but if you are still thinking about good luck, you'll need it.