There's a huge double bill at the F#unctional Londoners Meetup Group on July 4:  

Mike Hadlow: Monads in .Net

Gian Ntzik (Nessos Ltd.): F# in the Cloud

Join us as Mike Hadlow introduces Monads in C# and F# followed by Gian Ntzik on distributing computation in the cloud with F#.

The Skills Matter eXchange, 116-120 Goswell Road London