RBS loses £28billion in a YEAR as Darling warns British economy will collapse if second bank bailout fails Alistair Darling today warned the whole economy will collapse if his bailout of the banking system fails. His admission came as Royal Bank of Scotland revealed it is facing losses of up to £28billion for last year, the biggest in UK corporate history. RBS said it had lost £7 to £8billion in lending and £15 to £20billion on its stake in Dutch bank ABN Amro.