Just joined.

Hi Just received my sim, trying to register but do not receive a code to progress further.

BTBInstallations
Just contacted them about the same problem:

Got this:
The current SMS outage is the reason you’re not receiving texts or confirmation codes. This has already been escalated to our technical team, and they are working to resolve it. The service should be back to normal by the end of the day.

Similar problem here, texts from other sources working fine.

BTBInstallations, TheRandomUser, mikemod are you still experiencing issues receiving SMS short codes or is it working now?

All working now, my old number ported in with no issues today, great service as usual

Good to hear mikemod! Thanks for coming back and letting us know.

It was all sorted by the end of the day

Brilliant! Thanks TheRandomUser. Glad that it's resolved for you.