Check this site out, its all about places nr London to hold corporate events and conferences by plac

Hedsor House is just brilliant if you are looking for a stunning meeting and events venue set in an exclusive, private 100-acre estate. It sits high above the River Thames and is also quite close to Heathrow and London, making it ideal for many businesses. The location is from experience great for small team meetings right up to larger team building events. Hedsor House is in Buckinghamshire and is an unforgettable place for your corporate events..