London Pass is an excellent way to experience London paying less. Just be aware that as with any City pass it makes good value only if you visit many attractions.
There is no other European capital city like London where public parks play so important role in its urban environment. Before visiting parks and gardens, check their web sites to find the best way to explore each of them.
Southwark Cathedral performs regular organ recitals on Monday lunchtimes and recitals on Tuesday afternoons.
At Horse Guards Arch, Changing the Guard takes place daily at 11.00 am (10.00 am on Sundays) and lasts about half an hour; it is normally held on Horse Guards Parade by the arch of Horse Guards Building. You can watch how twelve mounted troops in traditional costume arrive from their Hyde Park Barracks.
Changing the Guard at Buckingham Palace is one of must-see events in London and free of charge.
Sunday Organ Recitals at St.Paul's Cathedral in London take place at 4.45pm. These recitals are free and last about 30 minutes. All are welcome to attend.
Bank of England Museum tells the story of the Bank of England from its foundation in 1694 to its role today as the United Kingdom's central bank. Admission free including temporary exhibitions.
Royal Air Force museum has a collection of over 100 full-size aircraft from across the globe and displayed at historic site of the original London Aerodrome. admission free.