Roaming was on on my online Virgin Mobile account.
Just tried the SIM on a Xiaomi Mi A1. After trying to connect to Virgin network I now have a warning sign on the top of the screen and the message "No service Selected network (Virgin Mobile) unavailable". I have gone back to see what other network options there are and the word "Forbidden" is after Virgin Mobile 4G.
This is affecting data, texts AND phone calls.
I was able to receive texts whilst in Jersey.