5 Forward 6 Back, yes, that's the service I used to get from Breitling when they were in London. So next time my watch needs a new battery, I think I'll go to Tunbridge Wells too.
There will be those who will try to tell you that you can have a battery change done 'while you wait' in somewhere like Bahrain. That might well be true - but it won't have been done by a proper Breitling maintenance agent, so will invalidate any warranty.