I had a similar problem at work
I work in the middle of London and used to use my bocks to go between the several buildings that we maintain
A manager got the hump due to me seeing him in the pub all day
and made trouble for me
My advice to you is that the car park (if private) is out of bounds
I don't know if you are the same but my lunch time is Unpayed
I now go out during my lunch time around London and to be honest it is much more fun
So go out at lunch and play in the street (not right outside as that will cause bad feeling)
You will always run into Prats through your life and I have found the best way to deal with them is to make them feel like they have had no effect on you at all (makes them feel even more useless than they already are
)
Jason
Ps The good news is that this counts as a Ban so you are now eligdible to join the Banned if you want
And you can wear the coolest T-shirt at work too