What are the legalities of parking on a private forecourt?

Did you park there? No an independent contractor did who was not your employee. So tell them to get stuffed and you will have the police on them for harment if they continue. 'phone them anyway. I do not understanad why you did not ask permission from the owners to park there between the hours of __ to ___ whilst you had the work done. Perhaps that is benefit of hindsight