The nationalisation comes after the European Commission blocked an earlier plan that would have seen the country's other large banks, Rabobank, ING and ABN Amro, contribute capital to a so-called "bad bank" to house SNS Reaal's distressed property assets.
Mervyn King's remarks that he wants to see RBS's poisonous and low quality assets hived off into a new so-called badbank matter - but probably not in the way that seems most obvious.