I've been involved the the British BMG Federation for 20 years, and I have conducted many workshops for them at their biennial Festivals, their annual Summer Schools, and as part of online events. The organisation is dedicated to fretted musical instruments (BMG = banjo, mandolin, guitar), but my workshops are usually open to all instruments.
The BMG Festival is held roughly every two years, and its location moves about the British Isles; in recent years it has been in London, Glasgow, Bristol, Brighton, Birmingham and Worthing. Its Summer Schools are annual, and again they use various venues.
To see what I did in previous BMG workshops, click the links below. Any questions, just ask (email me).