Royal Bank of Scotland on January 27 warned it would slump to yet another full-year loss after it put aside £2.5 billion to cover a slew of regulatory issues, including a looming settlement with US authorities over the sale of mortgage-backed securities.

The 73% UK government-owned bank is continuing to trudge through a range of legal problems built up over the years. The provisions detailed will show up in its full-year 2015 earnings expected in late February.