I had one too though.
Part seven of my cunning plan involved taking my other phone to work so they can't call me when I'm outside.its bliss,I tell em I'm working to time.
Then come back on time.
They now have to arrange the walk to be covered.if it looks like going over.
0905 start tomorrow and 1335 finish.
As a five hour shifts break is down to local agreement I've been told to take it at the end.
OK says me.calculator in hand. And a handy photo of the part time shift planner