Found the need to improve lights on my Roadster so investigated full LED headlamps from
Powerful UK as discussed above.
I had already fitted their ARV6 LED DRL lamps, but they retain a halogen headlamp bulb. Despite uprating bulb was generally disappointed with results on both main and dip. Lead to believe that anything that fits Defender will fit Morgan so took the plunge and ordered their E approved
HL051 pair albeit on sale or return.
Just fitted driver side one without issue, in order to make comparison. These are results against garage wall as weather not friendly enough to try in anger yet.
DRL/sidelights only.

Although the ARV6 type on left employ 12 x LED's in smiley format and look brighter side on, the bluish unfocussed light is dim on wall by comparison with new in DRL/sidelight mode. Here the outer six focused LED's run on half power.
Next we have dipped beam. On the right LED headlamp this comes from single central large lens LED.

Although camera angle favours the old ones its no contest really. Very well defined cutoff with tip up to the left to illuminate kerb. Look above cutoff to see how dark bricks are compared with splatter all around from halogens on left.
Finally main beam from the six outer LED's on full power with central dip remaining on. All seven have total current draw well below single filament of halogen.

Again camera angle favours the old halogen but totally eclipsed by LED's.
Assured they are MOT friendly but only 20 minutes to swap back. Oh and no ECU/BCU issues.
Note that lens does protrude 4mm more through mounting ring than previous, but only noticeable close up side on.