portable MP3 recorders like that Zoom unit are what you're after.
I have found the Zoom H4n for
£330 but that still feels very expensive. There has to be a cheaper way of doing it.
Why is it always the simplest ideas you have always turn out to be the most expensive
Recording time is important as I want to set it off recording and just leave it until the end and then collect as I leave, it has to be a no brain solution as I will have lots of other stuff going on at the time. At most events I am guessing there will be little moving around of the audio source I want to capture during the event, at least I hope not

Cheers
Cris.