Halifax and the Bank of Scotland will have to wait another three weeks until they learn if they will be allowed to merge.
The Office of Fair Trading has announced it will delay its decision about whether the two banks will be allowed to join for three more weeks. It had been expected to make a ruling this week.
The news comes as speculation increases the Government will make public its long awaited decision about the Lloyds TSB and Abbey National merger on July 10. A DTI spokesperson, who is conducting the review, has confirmed it is aiming for that day.