A warm welcome to the community. Thanks for stopping by and posting. This is easily done but I'm afraid I can't do it for you here.
You can contact the team on 789 from a Virgin Mobile, 150 from a Virgin Media landline or 0345 6000 789 from any other phone. Alternatively, you can speak to the web chat team.
Your contacts may be stored on the current SIM in which case you'll need to store them on the handset. When you get your new SIM, it will have an adapter which you can then use to transfer the contacts from old handset.
Hope this helps. Let me know how it all goes and if you need anything else.