UKCalling Non-Geographic Telephone Call Charge Changes

[Kosenurm]

Hi there,

I am aware that, on 1st July 2015, the rules change in how business advertise their non-geographic telephone numbers for customers calling.

Does anyone know if this will cover all letters that businesses write to customers (whether ongoing or new business?), and does it mean literally EVERYTHING has to be changed by the 1st July deadline?

Thanks,
K