They suffered because of bad management using inferior materials and using a poor unskilled workforce...
Are you sticking up for these big greedy corporate companies? Do you think they did nothing wrong? do you not think there was plenty of brown envelopes flying around... Have you ever questioned how inferior builds or renovations get passed.???
Surely the argument you have is 'Im not happy about EU workers on London construction sites and I see leaving the EU as the solution'.