Royal Bank of Scotland, which will this week publish a trading update for the first quarter, has risked provoking more anger from UK politicians by refusing to disclose details on its pay and bonuses requested by the Treasury Select Committee.

The bank, which is 70% owned by the UK Government, last week wrote to the committee to decline its request that it provide details of how many people at RBS earned more than £100,000 (€112,000) and more than £1m last year.