If you are looking for a short escape from London, then I recommend you take a short trip to this beautiful island called the Isle of Wight. You can take a train from London Waterloo to Portsmouth and a ferry to the island. There are wide varieties of things you can do on the island.
The Isle of Wight is one of the top cycling destinations so you have various cycling trails and routes to explore the island, for more information check out Bicycle Island. It also has many beautiful sandy beached to visit and I definitely recommend you to visit one of the popular beach called the Alum Bay also, famously know as the needles landmark attraction. Watch the video see my visit to Alum Bay.
There are many more things that I haven't mention in this blog. If you are interested in finding out more then check here.