Ok, there may be some difficulties but not necessarily a ban.
Before you consider travelling to the USA again, you would need to apply for the esta. That you May recall is the visa waiver you can apply for online to allow travel to the USA.
One of the questions for this document is it you have criminal convictions. If you answer yes, then the application will most likely be declined and not granted.
If you answer no, then the document could be issued. However, checks do also take place after.
If you do not answer correctly and it is granted and you travel to the USA, if you are then stopped on entry and it shows you did not tell the truth, you would be detained at the boarder. You would risk the chance of being prosecuted for committing a federal offence which could mean up to 10 years in a federal prison.
The safest way for you to proceed and to avoid an esta refusal, would be to apply to the US consulate for a B2 tourist visa. You can start the application on line and would then attend an interview in London at the Consulate. They would process your application listen to your account of the offence and then either issue or decline the visa.