I've only 5000 hours on B206's but the CAA won't recognise any of them, nor my overseas licences that are duly endorsed "Bell 206". Nor will they recognise my 1000's of hours on the A109, BK117, S76, etc etc: all require ground school/flight tests in order to be added to my UK ATPL.
John, I don't follow your argument? If you hold an ICAO licence, with type ratings and 500 hours on those types, you can add them to your UK licence by conducting an LST with a UK TRE. Now if you wanted to self fly hire a 206, a school would expect you to do a check ride, so you could combine this with the LST. If you wanted to operate the 76 etc then you would be doing so with a commercial operator (normally) and so would require a proficiency check anyway, again including the LST.