Huge energy change could rip-off loyal customers, say Which? and gas and electricity firms

OFGEM is being urged not to make a major change to rules which could punish loyal energy customers.

A coalition of energy firms and consumer groups is calling on the regulator to not allow the return of acquisition-only tariffs.

These cheaper tariffs are only available to new customers and not to existing, loyal ones.

Ofgem has been consulting on plans to remove a ban on...