I know the height of the lowest rear light (brake in my case) needs to be 350mm from the ground but is that the middle of the bulb/light or bottom of light itself?

ta

I believe it to be the bottom of the lens - I could be wrong though.

I forgot about the minimum height when I fitted my rear lights I had to jack up the rear with the spring adjusters to make sure I got through the SVA

Cheers

Mark

Pretty sure its the edge of the lens for height.
I think it's the center of the lenses for angles of visibility.

bugger!

looks like the C spanner will be doing some work tomorrow

For height/distance from edge or centre it's measured to the edge of the lens

Just measured and the bottom edge of the light lens is 135mm. Close or what!!