London top casino venues provide great deal to VIP players. Heritage, private gambling rooms, sophisticated luxury of Mayfair clubs & ritzy. The Hippodrome Casino is the biggest casino known as London's most popular entertainment venue to enjoy after work drinks, pre theatre dinner & gambling. There are 25 land based casinos in London and 10 that are no longer open. casino in London although it can get busy & isn't always the best for slots players.