Select Security, The Northern Ireland based security company headed by Andrew McQuillan, has closed with problems attributed to "cash-flow reasons." The company said the only standing debts were to HMRC and the owner's family. McQuillan told the Belfast Telegraph he has been left penniless and was devastated at losing his business. Some 300 staff, along with its numerous security contracts, are being transferred to other companies. Select has provided security on several series of Game Of Thrones, as well as the BBC drama production Line Of Duty. Earlier this year the company announced it was creating 40 new jobs at Pinewood Studios in England for senior management, security officers, and location assistants.