When I used to do some busking on the London Underground, the transport police would ask you for your name and address if they had to move you on too frequently or if they caught you dodging back to a pitch they'd just moved you off. They would usually send you a warning letter which you had to acknowledge. Buskers who gave false names and addresses often would have their instruments confiscated, but they were usually returned when proof of identity was finally provided.

Does anyone know why they confiscated his equipment ? - I expect that he'll get it back if he goes to see them and does what they request.