Travel Insurance Whilst Already Abroad

My partner and I have annual travel insurance with Ace. We were both abroad together and he is still abroad. I have just realise that the policy expired on the 1st of March.

Most policies I have looked at require you to get cover before commencing a trip. Does anyone know of a way of insuring him whilst he is already on trip?

Renew the existing policy and presumably it will give the required continuation of cover (but check to be sure)?

That should be the case, but check t&c, but ACE are good to deal with.