Harry Bloomfield wrote:

I decided on the latter option (E-Ballast)
it worked fine without any changes. Light comes on instantly

A few years back I changed the starters on three fluoros in my garage
and shed for the electronic ones, two of the tubes died within a couple
of days of using them, I presume the 'harsher' start was what did for them?

One of the electronic starters has now died, and one of the original
starters put back, if I go to the shed in the depths of winter the tube
may light quickly, but takes a long time to reach decent brightness, I
guess next time something fails will be the time for LED tubes