You can now fly from all the London airports to Berlin:

Remember to shop around the low cost airlines aren’t always cheaper than BA for example. You need to take into account the time/cost of transfer to/from the airports and how much you could spend on board.

Lufthansa have just opened a route from Berlin (Tegel( to London City which has good times and prices.

Once in Berlin you’ll find the local transport easy and cheap to use.