Now that Streetbike has gone bust, I did hear a whisper that Triumph were "actively looking" for a replacement dealership to replace Streetbike in a similar area. It may well be BS but I can only say I have had nothing but good service from Triumph whatever bike I have had.
BTW, I love my Speed400 very light and manoeuvrable compared to my previous Street Twin. I know I had original iffy software which has now been updated and (fingers crossed, touch wood etc etc etc) it has been superbly reliable. Just a few thoughts.....
On a very slight downside, I see the price of the Speed 400 & 400X have both gone up by £200 since I bought mine.