A top barrel guy in the UK is working out the final details on an improved lining process. He is working on over coming the issues the Teague process had mentioned in the article. As the former US representative for barrel lining I can tell you a big obstacle to overcome will be shipping guns over and back economically. The service will likely be far more cost effective for guns already in the UK.

http://www.bertramandco.com/
Booking African hunts, firearms import services

Here for the meltdowns