I'm going on Saturday 6th with a friend and we were considering just paying on the day.  I'm wondering though if its best to purchase tickets in advance because I thought that maybe the queue to get in would be horrendous.  Any advice would be really appreciated.
Thanks

I have bought a ticket on the day a few years ago and the queues weren't that bad.  However, I do find it easier to buy them before as it is quicker.  Not much, but it is.  If you know you are definitely going, I would buy one before but don't worry if you don't. 

Helen

i have always brought mine on the door at crufts

I've bought mine on the door too and never queued longer than about 7 mins :)
Lara x

always bought mine at the door,and never queued for more than 5 mins, but i suppose it all depends what time you get there i am usually there for opening time,
Carol