After going back to London made a quick trip to Oxford.It is a great day trip from London since it is only about a 1 hour journey from Marylebone train station.
When you arrive at Oxford there are many buses stopping at the train station.Since I needed to get back to london in a short time decided to take the tourist bus that covers the entire city in about 70-80 minutes.It costs 20USD but you can save about 10 percent by using a Viator promotion code that you can find online.
The bus makes about 20 stops and you can get off and return whenever you want.
I paid about 17 USD for a return ticket from London so it was not an expensive trip.
Here are some Pics