I have 3 five-foot flourescent lights here: two in the garage, and one in the utility room.
Some 5 plus years ago, the ones in the garage began to play up and fail to start, particularly in the cold.
New tubes didn't fix them.
So I replaced all the gubbins with electronic control gear.
The electronic modules were simple to wire in: L+N in, then a pair of wires to each end of the tube.
I ripped out all the magnetic ballasts, and starters and scrapped them.
This has worked flawlessly ever since.
I have my doubts that LED drop-in replacement tubes would play well with the electronic control gear.
I suspect they are designed to be drop-in replacements for fittings with traditional magnetic ballast / starters.
But the fittings themselves are now yellowed with age, and look like they did 10 years service on the roof of a linoleum-floored pub from the days when smoking was mandatory.
So now I'm looking at Aidan's cpc link.