Voice

VASTA
Voice Teaching Association,
Good listings for workshops.
https://www.vasta.org

I.D.E.A.
A great resource for learning accents. 
http://dialectsarchive.com

Rebecca Gausnell
Accent & dialect coach
based in London.
http://www.gausnell.com

Laura Neel
Classical singing coach based in London.
https://twitter.com/Lauraanneneel

Acting

Actors for Human Rights
UK based network.
http://iceandfire.co.uk

The Freedom Theatre
Actor Training in Palestine.
http://www.thefreedomtheatre.org

Bred In The Bone Theatre Company
Experimental physical theatre company.
http://www.bredinthebonestudio.com

Equity (UK)
Trade Union for those working
in performing arts.
http://www.equity.org

Music

Alex Bishop
Exceptional guitar maker.
http://www.alexbishopguitars.com

Allodi Accordions
The best accordion dealership
in the UK.
http://www.accordions.co.uk

Eckermann Drums
One of the finest maker of hand drums in the world.  
http://www.eckermanndrums.com/?lang=en

BITB Soundcloud
Examples of our experimental improvised theatre music.
https://soundcloud.com/bredinthebone/keikos-theme

Other

World of Coco
Aerial, Stilt, and Hula Performers.
http://www.worldofcoco.com

Helen Murray
London based photographer.
http://www.helenmurrayphotos.com

Dumbwise Theatre Company
Actor-Musician Company
creating great work.
http://www.dumbwise.co.uk

Grotowski Institute
Performances and workshops at Grotowski's space in Wroclaw, PL.
http://en.grotowski-institute.art.pl