There's a plethora of agencies nowadays, and many spam advertisers are offering their services to every school that puts an ad in TES. I checked one today and was astonished at the fees they were charging: 15% of annual salary for a standard teacher, more for leadership. That equates to around £4500 per teacher at my school (someone is now doing the maths to see what salaries my school offers). If you're after just two teachers, it is far cheaper to place a premium TES ad along with the same for eTeach, set up a posh hotel conference room in London (as in the old days), provide a travel allowance for each candidate and still get change after two business class tickets for the head and deputy to fly to London. Which schools pay these fees? Especially as the quality of agency teachers tends to be far lower than the DIY methods.