Terry and Brendan McMillan were stabbed to death on July 28 in Long Lane, and a third victim was injured.
Hassan Cevik, 31, of Mount Pleasant Lane in Hackney, was charged with two counts of murder, Section 18 grievous bodily harm and possession of an offensive weapon yesterday (August 10).
Police were called to 1pm after four people were stabbed at Terry McMillan’s property development and investment business, The Trademark Group, where Brendan also worked.
Officers arrived with the London Ambulance Service and treated four people for stab wounds.
Terry, 58, from Chislehurst, died at the scene.
Three others were taken to hospital including 27-year-old Brendan, who died soon afterwards.
Cevik was arrested on the day of the attack and also among those taken to hospital.
He will appear at Croydon Magistrates Court today (August 11).
