Thanks for the replies,
I have tried a few of your suggestions gr5 which seem to have improved things, I tried setting the nozzle just off the build plate which resulted in no / poor extrusion, I then tried increasing the temperature to 260 from 255 which allowed extrusion to happen, I also reduced the initial layer thickness from 0.2mm to 0.13mm. I am going to try setting the nozzle height with a cigarette paper as I found it a bit difficult judging when it was just off the glass
Avogra that's exactly the problem I am having, the designs I am trying to print have lots of small holes and components a bit like a gasket and the circles and corner start points would often stick to the nozzle when it completes the feature and moves to the next one, dragging the whole lot with it, I'm currently printing first layer at 20mm/s so I may try slower.
The thing that improved that a little bit for me was introducing a Z hop on retraction and turning off combing.