In the letter, the watchdog explained that the current rate of bank branch closures "seriously undermines" the banking industry's efforts to address this issue. Natalie Ceeney, chair of the Cash Action Group (CAG), responded to Which?'s concerns by highlighting action is taking to deal with any ramifications from further closures. Barclays, HSBC, Lloyds Banking Group, Nationwide Building Society, and NatWest are among the banks which have cosigned to the group's message of providing greater access to banking resources Ms Ceeney said: "Bank branches may continue to close – and any decision will remain a matter for the individual bank and their regulator – but new shared services will spring up in their wake."