Masha Allah...Good News. but There are some other reasons for that too...
Nothing else is available.... If you go to the Hospitals in UK, You get Halal Meat..... Most of the Schools Halal Meat ...... Most of the Fried Chicken shops throughout and resturants belong to Muslims..... Even many Big supermarkets are Selling Halal Meat in muslim Majority areas.... Why???? Because Muslims Dont eat Non Halal.......(Simple as that)
Why would you get surprised by knowing that Non-muslims eating Halal meat when there are no other options for them? :)) Majority of people eats out here as its the custom.....
Once the same complaint was raised by my english friend and he said these things 2 years back... The credit goes to them too as they have this tolerant and adaptive society to integrate others ....