I've had brit bikes and for nostalgia value they're great but own and ride one every day for a year and you'll understand.
I do ride one nearly everyday. Not today though, its pissing down
1955 Ariel Square Four, 1969 BSA Bantam (Being Restored), Matchless 350 in boxes in the shed of dread
Its well known the Japs came over and bought British bikes, shipped them back to Japan and started copying them. The first Jap bikes were.....shit.
. Maybe the first batch of jap stuff was a bit crap but by the beginning of the 70s they had done something that british bike and car manufacturers hadn't, learned from their mistakes and evolved. British bikes hadn't really been improved on since the late fifties. Just a few of the brit bikes I've had....
Triumph T140 engined rat
Triumph Bonneville Jubilee
BSA Rocket Gold Star
Matchless/AJS 350 trials
Most pf them with the exception of the Matchless and C15 were bloody awful. As I said if nostalgia and regular stripping down and rebuilding is your thing the're fine but I really can't be arsed anymore, I could probably rebuild a C15 engine with my eyes shut, one good thing about them though is at meast they were easy to repair unlike the jap stuff, if your brit went tits up you stripped and rebuilt, if your jap died you threw another lump in there......