For moves out of consulting I would recommend speaking with the firm Holker Watkin - they specialise in placing ex-consultants (top tier) into strategic roles in industry and banking, so an excellent firm for helping with a move to eg. a FTSE 100 company. Nick Coppin and Dave Watkin are a couple of people I know there personally.
As regards recommending recruitment firms who can help with moves between consulting firms, I'll leave other readers to respond as clearly many of these firms are our clients and I don't ever seem to be able to make such recommendations on this forum without someone saying my advice is skewed by this commercial relationship...
Tony Restell - Top-Consultant.com
<a href=http://events.top-consultant.com/UK/careerconference.aspx?ID=413>Revitalising Your Consulting Career --- Securing a Career Move in Consulting in 2009</a>