In Greenwich town centre, on the corner near the Mitre pub every year there's a pop-up Xmas tree vendor, just on the pavement.
They've been doing it for thirty years - I don't even think they've got a license or anything, but the cop shop is close by, so I reckon the rozzers turn a blind eye and get their trees there at a tidy discount. They're nice people, the trees are top quality and the prices beat the living shit out of all the posh places and garden centres round SE London. Cracking Xmas tradition round Greenwich way. Warms the cockles of your heart, it does.
Merry Xmas, by the way.
God bless us, one and all.