Advice how would you emerge from here

cooper1203:
in all seriousnmess i was quite happy to wait and i did get a gap that i could pull out into without upsetting anyone. My question was more along the lines of did i judge the situation correctly as it seemed silly to build and design somthing like that when they could of easily removed a bit of fence and had the exit through the petrol station as the canopy was 5 m

What else could you have done? You had only one option: wait for a gap, which you did.

You’ll find over the years there will be certain roundabouts which pose the same problem, where it’s nigh on impossible to pull out without blocking someone, unless you wait for a long time. It is what it is. You did the right thing by waiting on the A13.