Nothing will happen, it's just the police being arseholes. Suspicion of burglary just means they were obliged to remove you but they don't have any jurisdiction over trespassers. Shit about your kit being confiscated, well OTT that is. SERIOUSLY... Write a letter of complaint to the Chief Constable saying that you have been treated unfairly and out of proportion to the circumstances. DO IT.
The first night in a cell sucks and it does take a while to get your confidence back. After that though it's just a game, the second, third time it's just a waiting game until the duty inspector does his rounds and realises his custody cells are full of innocent people, you usually get out about 15 minutes later tbh. I've learned that you may as well be angry and obnoxious, because once you're processed at the desk, destiny is sealed, your attitude is insignificant. Don't say anything at the interviews, I mean NOTHING. You don't have to, and they can't make you. ALWAYS have the duty solicitor present as well.