Polish builder killed in accident poses with Cesc Fabregas Both men, who are understood to have been working at the £25 million house for a number of months, where employed by a UK-based property and construction firm which employs only Polish workers and had been warned three times about safety standards in recent years. Mr Procko posted the photograph of himself with Mr Fabregas in Cadogan Square on his Facebook page, last September, saying: "With my colleague Fabergas in our working clothes." The square was once home to the former England football manager Sven Goran Eriksson and Chelsea FC's manager Jose Mourinho. The building being renovated by Mr Procko and Mr Szymanski is owned by Taher Helmy, a former legal adviser to the deposed president of Egypt, Hosni Mubarak and is one of the country's foremost lawyers. It is thought the pair were moving a sofa out of the first floor window using a rope and pulley system when the balcony's iron railings gave way and fell 30 feet on to the men below. Witnesses described seeing Mr Procko and Mr Szymanski lying in the street covered in blood, impaled by pieces of petal. An older men was seen shouting about one of the two builders: "He's my son. He's my son, he's moving" as emergency workers fought unsuccessfully to save his life. Mr Procko's Facebook page shows him appearing to enjoy his time in London while at the same time missing his native Poland. In one picture he poses outside Westminster Abbey with a friend, while other photographs he took show expensive sports cars parked around the streets of Chelsea and Knightsbridge.