To those complaining this thread has gone off-track, here's an off the top of the head list of UK based young and not-so-young folk (or thereabouts) musicians currently making good music in the UK.

Most of them have only come on my radar over the last 5 years. Some of them, like Ali Roberts, have been around a fair bit longer. Most are under 30. Not all of them are my cup of tea, but all are doing something interesting interesting.

I've no idea if this constitutes a revival, and I wasn't listening to folk in the 1980s/early 90s, but as far as I'm aware there wasn't music this interesting being made then.

Alasdair Roberts
Michael Rossiter
Sam Lee (and his Gillie Boys)
Nancy Wallace
Mary Hampton
Benjamin Wetherill
Jason Steel
Trevor Moss & Hannah Lou
David Broad
Little Robots
James Raynard
Kittiwakes
Laurel Swift
Trent Miller
Serious Sam Barrett
Boycott Coca Cola Experience
Ewan McLennan
Pepe Belmonte
Elle Osborne
the Lorcas
Benjamin Folke Thomas
Caroline Weekes
the Cedars
Jack Day
the Owl Project
Matthew Ord
Sunnie Dae
the Hanging Ropes
the Woordlarks
Harrisburg
Andy Hankdog
Emily C Smith
Dan Raza