[renaudg]

All the "agencies" I know of in London are just the contracts arm of a traditional recruiting business. They are agencies in terms of how they operate (charging the customer on your behalf and taking a cut), but in terms of the kind of jobs they'll find you it's all onsite 6 months+ gigs that are often also available as a permanent positions.

If there are any agencies specialising in actual consulting gigs (meaning either short term / part time / remote and project-based, like a cloud migration), I'd be interested if someone could give a few pointers.