Cheers for the responses guys. I wish there was something that ATC could do to help change the situation, but it seems the powers at be enjoy having their head in the sand.
We've asked countless times for Willy to come and visit the tower and see how bad things are on the ground for real, no joy yet.
I enjoy a challenge on GMC and always try keep the humour but the frustration is that LHR could be a much better environment for all if BA management got their house in order.
Interesting to know about why loadsheets and cabin take so long, we didn't know that.