For what it is worth, my own recommendation would be to work with just one or two recruitment agencies. When you sell a house, the estate agency is much more committed to marketing your property intensively if they know that only they stand to make a fee if the property is sold. If you use several agencies then none will spend time with you that they could be spending with a more promising candidate.In terms of being open with recruitment agencies, I think there are a lot of upsides to telling them who you are already talking to:<li> your CV will not end up being sent to the same firm twice (which makes you look desperate and / or not in control of your applications)<li> being able to communicate to their clients that you are being actively pursued by some of their competitors will make that client more likely to want to interview you - and more likely to be generous with the eventual salary offer if they think they've got competition<li> this knowledge gives the recruitment consultant a much better steer on the types of firms that interest you and therefore makes it more likely that the roles they propose to you in the future will be a close match to what you are looking forSo in short, my advice is to <b>HELP THEM TO HELP YOU!!</b>Best of luck, Tony