Which Hotels Have Family Rooms That Accommodate 2 Adults With 2 Children In London?

I am giving you two websites for family rooms in London which can accommodate 2 adults with 2 children. Please see the link below.
www.visitlondon.com
www.welcomehomes.co.uk

Beyond hotels and bed & breakfast type inns, which can be quite expensive in London - you may consider renting a privately owned apartment, or 'flat' as they call them in the UK, for the duration of your stay.

If you are staying for a particularly long time, the benefits of having an entire space to yourselves can  outweigh the costs of a hotel, and renting a flat can be far more affordable, particularly if you make use of the kitchen and cook some of your own meals.   

You'll find it as helpful it for a home base, since the tube (underground railway) is pretty convenient and easy to use.

Here are a few within the Kensington area of London, near Hyde Park and other attractions:
London Holiday Apartment Rentals