Re: However compared to 25,000 778 is only ~3%
Right, but that was the number of bikes for one of the series of Harley models.
It has been repeated many times that the sportster model is the most popular in the U.K., though I have no numbers on it.
Also, if you recall from previous threads on this subject the BMW GS was ranked very high in number of units sold.
I would probably guess that the total number of HD units sold in the U.K. is about 2500-3000.
Not huge by any means, but it appears to be growing at a modest rate.