Complex sentence: Enfield Town had the world's first ever cash machine or ATM, which was installed at the branch of Barclays Bank on 27 June 1967 was opened by actor Reg Varney.
Split into simpler sentences: Enfield Town had the world's first ever cash machine or ATM. It was installed at the local branch of Barclays Bank on 27 June 1967 and was opened by actor Reg Varney.