My online connection is down right now so I cannot check about
service for shipments not originating in the U.S. but I have been
pleased with the service and insurance capability provided by Parcel
Pro. The insurer is international so there may be an equivalent
shipping service available in the UK. I learned about Parcel Pro on
the Orchid list. 
Orchid rules!
Try www.parcelpro.com or call the customer service department at
888-683-2300.
Good luck to you.
Pam Chott
Song of the Phoenix