He said compulsory security measures including ID scans, large security teams and extensive CCTV networks had driven up costs. He also said Tower Hamlets council had clamped down on one-off licence extensions for special events, causing a 30 per cent drop-off in business last year. Mr Miller, whose bar will close on November 11, said: “You go to these venues and there is airport-style security — it’s almost like the council expects you to run a prison. ”