I took the Bonneville in for its MSVA inspection and it passed with no problem. The CO emissions were well below UK standard. Oh, what a surprise that a British made bike passed the British inspection! Even the inspector couldn't conceal his smirk.
After that inspection which cost 85 GBP and the fee to transport it to the inspection station because I couldn't insure it, I immediately shelled out another 30 for the MOT which duplicated the MSVA inspection but was less stringent.
I then sent another 115 GBP to Swansea to register the bike and they have yet to respond...
Even though it has been an unnecessarily expensive endeavor, I would do it again because I have owned the bike since it was new and know that my dealer and I took good care of it. Also, I would not have been able to sell it in the USA and buy a similar quality bike here for the money.
If you are thinking of bringing your motorcycle, that's the story so far.