The Clydesdale and Yorkshire banks are reviewing their PA needs and are set to hire their first political consultancy.
Ewan McCulloch, government relations manager for both banks, confirmed the company was looking to hire a public affairs agency and had already seen pitches from six.
Both banks are owned by the National Australia Group and constitute the largest foreign-owned retail banking company in the UK. McCulloch's remit covers the Clydesdale in Scotland and Yorkshire in England, while National Australia has a separate public affairs head for its other European operations.
He has not ruled out continuing to use the British Bankers' Association parliamentary monitoring - monitoring is to form the core of the new brief - but said he expects to hire a lobbying agency within the next few weeks.
BBA director of communications Simon Pitkeithley, who runs the Westminster Watch monitoring service for many of the body's 300 other members, was unavailable for comment.
The body's PR manager Brian Capon said: 'We don't compete with the lobbying companies. We provide industry-level information but can't always track issues relevant to each individual bank.'
The brief is thought likely to include daily updates on specific issues relevant to the two banks. The BBA only sends out weekly bulletins, though it includes alerts for urgent information.
McCulloch is looking for an agency with financial services expertise.
The brief will only cover London as the banks already use McGrigor Donald Public Policy for public affairs in Scotland and have no plans to hire agencies elsewhere.