Questioned my installer about this yesterday this was their email reply.
Ok so the GHOST System is not Thatcham Approved and more than likely will not be for the foreseeable. GHOST is now TASSA Approved (Which means Some insurance companies are starting to recognize it but not all).
There has been a small amount of info about existing customers and as this is all very new I’m led to believe that it is only the GHOST 2 that can be “Upgraded” to be a TASSA Approved Install and that they had to be within a certain time frame of a few months from having been installed. Like I said, this is all very new….
Thanks for the update @ZEB apologies for the misinformation, I stand corrected.
I got the info from the owner Lee at SRS when I had mine installed. I'm guessing he's mixed up TASSA with Thatcham.
I still got the discount from Adrian Flux insurers so it still might be worth speaking to an installer or your insurance co about the upgrade (obviously model dependant now) to see if it does lower your insurance premium too.