Halifax (bank)
In 2001 the Halifax merged with the Bank of Scotland and formed Halifax Bank of Scotland''' (HBOS).  Both brands were kept although some Halifax branches in Scotland became 'Bank of Scotland' and Bank of Scotland branches in Ireland became 'Halifax' branches.  This was done because the Bank of Scotland was much larger in Scotland than the Halifax, while Halifax was much larger in Ireland than the Bank of Scotland and had spent a lot of money advertising of Irish television.