Cheapest place to park near hoxton hotel, london ec2a?

I will be arriving in London around 10am Saturday morning and need somewhere to park until Sunday afternoon. I am staying at the Hoxton Hotel on Saturday and then I on going to Camden Market on Sunday. I am travelling from Manchester and would like to know what are the cheapest options. Would it be to park outside London and travel on public transport into the centre or park near to the hotel - I don't mind a good walk but my wife is pregnant so nothing over 2 miles really. Money is unfortunately an issue so the cheapest option would be the best. Many Thanks

If the link below doesn't provide your answer, there is an info email link on the page where you can ask the hotel. They probably answer that question a number of times each day.

http://www.hoxtonhotels.com/getting_here/address/