Does anybody know what the is minimum age allowed for spectator dogs please.  I'm sure I've read somewhere that it is 4 months although it's 6 months for NFC and exhibiting.  Can anybody confirm this please?

I believe it is down to each individual society wether they allow spectator dogs & what age. I would suspect it would be 6 months old?? They do state they allow spectator dogs at a rate of £6 per dog!
If your dog is under 6 months(but more than 4), I would contact the secretary before hand to see if they will allow you to pay as a spectator dog ;)