There have been quite a few old Pentangle and Bert Jansch recordings posted on YouTube in recent months.

BBC The Genius of Bert Jansch Folk Blues and Beyond, from 2014. Interviews and archive footage weave together performances from a concert at the Royal Festival Hall celebrating the songs and artistry of the folk-blues troubadour Bert Jansch.

Pentangle – ‘Newsnight’ 26/06/08:Robin Denselow investigates to third coming of the five and has coffee by the Thames with publishing personality Ian Anderson.

A Guardian article about the same concert:

Pentangle’s 2008 Royal Festival Hall reunion brought them back to the venue of the live half of their Sweet Child double album (1968). By many accounts, that performance was not without its rough edges. But the musicianship on display during tonight’s two-set engagement is awe-inspiring, virtuosic and – still – somewhat perverse: an endless knot of strings, disparate influences and textures.

And a Bert Jansch concert at the same venue in the early days: Bert Jansch – Royal Festival Hall 30/6/71