Not sure what kind of lighting the crane had but there is no substitute for a good white strobe like the Canary Wharf building has albeit on a smaller scale.
Once all the sensationalism and waste of time eye-witness reports quieten down then the AAIB will quietly get on and draw their conclusions in the months ahead. They do an excellent job in very difficult circumstances.
From all accounts this crane was an accident waiting to happen given its proximity to the heliport and the nearby river.
As professionals within this industry I think we know which way this will go and common sense will prevail but sadly too late for Pete.