I have just seen this tweet claiming Jarv will be playing a couple of secret gigs in Glasgow next weekend if anyone is in the area (I'm on my way out, haven't got time to folow it up and see who this person is, sorry):
I think because it's in a nightclub - then you wouldn't usually have tickets on sale.
They are showing lots of BBC documentaries & Jarvis is there the the capacity of them screening The Big Melt.
Maybe the special surprise at DocFest is Jarv & Steve on the wheels of steel..? They're no Freddie Fresh but they do play some interesting bits & pieces.