Never bored in London
I visited London several times before I moved here permanently. There is plenty to do and see in London and many guide books are available so I won't document everything here. I've included some pictures from Local sights: Parliament, London Zoo, Trafalgar Square, London Eye, Westminster Abbey, Buckingham Palace, Regents Park and more.
There are many cheap flights to London these days from all destinations. There are a few ways to get to/from the city center too depending on which airport you arrive into. If arriving into Heathrow airport, the cheapest is the Picadilly line which can take over 1 hour on the underground. The next cheapest is a multi stop train on the Heathrow Express. Then the Heathrow Express which arrives in 15 minutes to paddington Station.
If arriving into Gatwick airport the only option should be the Gatwick Express into Victoria station in 30 minutes time.