Hi Frances_Y
Welcome to the Community and thanks for posting.
Oh no, I am sorry to hear you have lost your SIM whilst abroad. Are you still outside of the UK at the moment? If so, I am afraid we are only able to send out a replacement to a UK address.
If you would like to proceed with the order of the replacement for when you return, please let us know and we will get this arranged for you.
Thanks
Nat