Progress has been quite slow with slating as it's not a job for frosty damp or windy days and roof is more or less weatherproof so no rush.
LED 'fluorescent' lights were installed yesterday and they are quite impressive - brighter than comparable size old type and come on instantly.
Not qute sure how reliability will be long term at this stage.
It sounds like some people have had about 10% fail in the first few weeks then remaining units seem OK.
(new) Mavic Pro aerial shots.