Increasing trend I see on Britbike internerd forums is adding electric starters to older twins, even at the two-grand-plus Shropshire Classics charge.
So "The best British bike to ride, look at and invest in?" - T160 with the US-market tank. Closely followed by late Co-op twin also with US tank. Electric-start Commando with all the mods. both to turn the standard 'electric foot assist' into a proper electric starter and make the bike perform like previous kickstart-only versions.