Another banking asset in Britain looks like it will be on the market, and may emerge as one more for management of National Australia Bank to consider in the context of its own expansion, and even exit, plans for that market.The Times and the Financial Times reported yesterday that Royal Bank of Scotland was likely to sell its RBS-branded branches in England and Wales, and in order to meet conditions insisted on by the European Union as it seeks to repair some of the anti-competitive affects of last year's bank rescues by Britain's government (and which left the Treasury with a stake of around 70 per cent in RBS).The Times reported last month that RBS was already considering rebranding the RBS branches outside Scotland under the name Williams and Glyn's, a brand arising from the merger of two predecessor banks in 1970 and which disappeared from the high street in 1985.This branding strategy remains an option as RBS management seek a buyer for around 310 branches.A trade sale, a sale to a private equity buyer and a float are all options before the RBS board, though a trade sale seems a likely option.NAB is supposed to be open to buying niche banking operations, such as building societies, which might deliver a retail funding base.The RBS branches in England and Wales, while a more expensive option, would deliver a more balanced business, including many of the business customers that might fit with the bank's existing strategy for growth in the UK.