I've just bought some LED side repeaters that are E marked (E11). Any one see any potential problems with SVA?

Cheers

Nope - as long as they a visible from all angles.

IFAIK

As long as they (key word here) resemble normal lamps - no problem!

I'd check radii though... just to be sure!

no they will be fine! plus last longer than
bulbs bonus!

i think you need a balast or resistor to make them work with the flasher unit