Just an update on this, for all those who were interested.
My son has now been volunteering for a few weeks, and is really enjoying it. The lock keepers he has been with seem to be very friendly, and happy to have him there.
He was at Penton Hook for a little while and is now down at Sunbury. He is there today if anyone is going through
He also worked on Saturday night for the Sunbury Regatta, until 10 p.m. (they keep the lock manned until midnight on Regatta day).
No reimbursement of travelling expenses has come through yet, but I expect that is just the usual admin hiccups
Personally, I was a little fed up to find that, because they did not get enough volunteers, they ended up employing Summmer Assistants again this year anyway - so he could have applied for that, if only he had known!!
He has said he would like to be a Summer Assistant next year if he can, so maybe his experience this year will help towards that.
It is certainly keeping him off the computer games for a litte while.
Jo.