I have done that, and it took me back to a page asking for my name and address again and contact details. Done all that and tried to submit it, and a message came up about a technical error! The submit box has now changed to ‘please wait’ (I tried going back, but it gives me the same message!
Sorry, something's gone wrong
We have a technical problem. You won't be able to make London Road User Charging transactions at the moment.
Please try again later.
(I need my bed!)