If the MIL is on, then a fault code has been recorded by the ECU. It's certainly worth getting it checked out, and for really not very much money at all you could buy a code reader so you can check it yourself.
I appreciate that with the car under warranty you'll want to take it to the dealer for any work to be done, but it might be good for your peace of mind to know what's going on.
I am strangely relaxed about the MIL. But I do want it seen to.
Meanwhile, it's pleasurable just looking at it !
So glad you like the car Simon. You've done a great write up and it's interesting to see your views coming in as a new Morgan owner. Nice GT3 by the way!
thanks for following it through the build process.
GT3 is feeling a bit unloved

Sean
This engine light is due to the ford ecu and piggy back ecu which may be an MBE or omex , nothing is actually wrong it just needs to be sorted by the mog dealer. I had to deal with my engine light issue when I bought my mog off the previous owner who didn't sort it , a bit scary but its an ecu issue not an engine issue .
As it's a Cosworth engine, I would have expected Cosworth to put its own ECU or modify the standard Ford ECU.
I also thought about this "shed of grey" (or was it shade of...???), but in the result did opt for an old Mercedes Benz solid (grey) color instead - imho similar subdued & understated (cool) vintage style
And the combo of grey & dark brown just "works" perfect for me...
The is my first grey car -- it is a flat colour but it has the ceramic lacquer coating. I went for it because I wanted an understated shade which works with P4 shape. I love the cuba and grey combination too.