I took the zip back down and examined my leg, it wasn't sore or hot and didn't appear swollen.
I zipped it up again and it was still hard to zip, so as not to exacerbate the problem I removed the boot and wore shoes to work.
Today I tried again, my leg hadn't troubled me at all yesterday so I thought it worth a go.
I pulled on my boots, raised the zip and same as before the zip on my left leg went up, no problem, the right one was definitely tighter, I took another look and this time realised that as my boots are slouch boots, the top edge was turned in and this was what was causing the problems, I didn't have a fat leg at all.
We had new copiers installed at work at the beginning of the school year. A make we had used years ago and found to be unreliable. I thought it was a bad decision at the time and said so. I made my feelings quite plain but was ignored.
We are now just over six months into our contract and the copiers are proving incredibly unreliable. To add insult to injury every time an engineer comes to repair a fault it is always suggested that the copiers are being incorrectly used. For example the paper is stored too close to them, or I'm putting too many copies through the machines. I've been asked to keep a log of all the faults, I was doing this anyway for my own benefit. Nothing will be done but I'm expecting work to become extremely stressful as it will be incredibly difficult to do my job with unreliable machinery.