Having major problems posting this..... Photo Radar keeps falling down, it seems. Sorry if some is duplicated
I mentioned minimum wage because a lot of people are on that, or are otherwise strapped for cash.
I'm sure your time is worth more than 6 pounds an hour - everybody's should be but, sadly, for a lot of people it isn't, however hard they work or how qualified they are. Having a group of five of six students at a time, though, means that your fee wouldn't be 6 pounds an hour - it's a lot more.
Anyway, with travel, food and accommodation, it's way above my budget.
Just to check, I picked up the nearest photo mag..... and came across
this weekend workshop. It includes breakfast and lunch daily, plus accommodation, and comes out at 490 pounds per person, per weekend. For me.... feasible, just about 'do-able'. But then it doesn't need a journey to France and then food and accommodation there.