I'm looking for software/app where I can send or receive the faxes within the UK.
I've tried Fax Burner, FaxZero, but they all work in the US (basically the disposable number is US-like) and my sender doesn't want or can't send international faxes.
The question is similar to a USA question, but this focuses on the UK.
Preferably free of charge (within certain limits) and run on OS X/iOS devices, but I'm open to on-line services as well.