WR do now own the Teague marque but I understand from Simon Clode that Nigel Teague is staying on for the meantime to oversee all output.
I have had only one gun fitted with Teague chokes: a Henry Atkin Pigeon SLE which I had sleeved after some AH cut it down to 26". I thought the work was exemplary and the gun shot extremely well with the new chokes. It is now in regular use with a customer and he is delighted with its shooting and adaptability.
At present I am TIG sleeving a sidelever BA hammergun by Blanch 12g to 16g, more as a personal investment rather than a stock item for Heritage Guns and am having Teague chokes fitted during the sleeving process.
This will make the gun suitable for anything from early season driven partridge (open chokes) to January's sneaky cock pheasants (tight chokes).
I have seen one dodgy example of chokes done by AN Other business in the replacement choke business and it was appalling. (No names, no pack drill) There was a very visible gap between the bore and where the choke tube started. These were fixed chokes, not interchangeable.
I hope that this was an exception but it made me gasp!
Whether it is worth sending your gun all the way to Blighty to get the benefit of Nigel Teague's skills is a mute point.
Don't forget that you will need some kind of export licence to get it back out again if the gun is post-1896. I am sure that Nigel and his import/export contacts have got this covered but it may be quite expensive using a route that is set up to service the US market.
Best to ask up front.
The cost of the chokes may pale into insignificance when you factor in the shipping costs. Or maybe not...
Best of luck.