Ok, so it's not that unusual to find a 3 course meal for £10 on lastminute.com, but what stood out for me with this one is this restaurant is ranked 8th out of over 7,500 on tripadvisor, high praise indeed!!!
It is located on Buckingham Palace Road, so very close to Victoria Station, Buckingham Palace and the Victoria theatre which is currently showing Billy Elliot.
I've search availability and it seems to be for lunch and dinner most days, including weekends. Available until 30th November 2010 too.
Link for tripadvisor.com reviews:http://www.tripadvisor.com/Restaurant_Review-g186338-d680466-Reviews-Bumbles_restaurant-London_England.html