No you cannot port cellular numbers to fixed line networks including Euphoria Telecom.
However here's a thought...
You could forward a mobile number to a Euphoria Telecom number, you would pay the cellular/mobile operator for the calls,unless
you have free minutes or an unlimited package.
In this scenario case you could use it for roaming purposes and forward the Euphoria number to a prepaid cell in London for as little as R 1.30 per minute billed per second. You would have international roaming for cheaper than a local cellular call.
A few of our customers use this 100% legal method to save thousands of Rands. It is simply about learning how to use technology to your advantage.