MindShare pitched against incumbent Carat, Initiative Media and Manning Gottlieb OMD for the task.
The review follows the bank's decision to appoint Wolff Olins to look at its brand strategy. Abbey National called in Wolff Olins in March to undertake a fundamental review of its brand after announcing a loss of almost £1bn.
The bank has since awarded its £25m creative account to TBWA\London, which is already understood to be working on the brief along with Wolff Olins.
Abbey National chairman Luqman Arnold has been involved in the overhaul, which some reports have suggested could lead to the bank changing its name to The Abbey.
However, at the time of writing, Abbey National, the UK's sixth-largest bank, said it had not got anything to say about the media brief.
Naked Communications is believed to have been hired on a project-by-project basis for specific areas of the business. However, at the time of writing, neither Naked nor MindShare would confirm any appointment.
Carat is the long-standing incumbent on the media business. The agency handled media both for the main Abbey National brand and its internet bank Cahoot!, which spends £5m on advertising.
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