As per title, can anyone recommend a “not too expensive” place for all day parking in London on a Sunday?

Riding the palace2palace from the Mall to Windsor Castle.
So will either ride back again or take train to collect car.

Any ideas would be appreciated.

lol…think Ive managed to answer my own question. Great site called http://www.justpark.com seems to have lots of cheap options

Plenty of on street parking is free on a sunday even quite near the middle. We tend to go somewhere in Chelsea or near battersea park if coming in from the west. Most councils have a map on their website showing the restricted and free areas

Loads of places are free on Sunday . Single yellow lines are fair game too.
Starting at the Mall…I would park in Soho. If you wanted to get the train back ,have a drive around Paddington.

Tonnes of parking around the embassies in Kensington, if you go early. On the map, all the area between HSK and Cromwell Road (A4)