Skipton Building Society has raised the minimum opening balance in the Midlands and South of England to deter carpetbaggers.
The society has raised the minimum opening balance to £5,000.
For accounts opened in the North in person the minimum balance is £2,000. But investments for investments of between £2,000 and £5,000 accounts must be opened in person.
The society's mini-cash Isa is now only available to existing customers. The NSPCC mini-cash Isa can still be opened in the North, but may only be opened in the Midlands and the South if it is part of a branch-recommended portfolio.