A

• ACQUIS NT EDUCATION in collaboration with the National Theatre of Ireland, the TheaterWerkstatt/Theater+Schule, Munich and Laboratorio Nove, Florence
• Action for Children's Arts
• Action Transport
• Aesop's Touring Theatre for Schools
• The British Association of Professional Theatre for Children and Young People (APT)
• Arc Theatre Ensemble
• Arty-Fact Theatre Company
  Performs interactive Historical plays to primary schools all over England
• AssiteJ International (world theatre network of theatre for children & young people)

B

• Barking Dog Theatre Company
• Black Cat Theatre Company
• Booster Cushion Theatre
• London Bubble Theatre Company

C

• Catherine Wheels Theatre Company
• The Centre Stage, Belfast
• Certain Curtain Theatre
• Chicken Shed Theatre Company
• Cleveland Theatre Company
• Clwyd Theatr Cymru Theatre for Young People
• C&T
• The Colour House Theatre, Wheelhouse Productions
• Cornelius & Jones Original Productions
• CTC Theatre
• Custard Factory Theatre Company

D

• Dream Productions Theatre Company

E

• Eureka - children's museum

F

• Freshwater Theatre Company
• The Flying Pig Company

G

H

• Half Moon Young People's Theatre

I

• Imaginate - children's performing arts in Scotland

J

K

• Krazy Kat Theatre

L

• Little Angel Theatre
• London Bubble

M

• Magic Carpet
• Merseyside Young People's Theatre

N

• National Association of Youth Theatres
• National Youth Music Theatre
• National Youth Theatre
• Northern Kids
• NT Shell Connections (promoting youth theatre)

O

• Oily Cart Children's Theatre

P

• Paradox Theatre
• Playstage
  Provides schools and youth organisations with royalty-free plays, pantomimes, nativity plays and plays with music for children aged 7-16. Full production notes and a licence to photocopy is included with every play 
• Polka Children's Theatre, Wimbledon
• Pop-Up Theatre

Q

• Quantam Theatre
• Quicksilver Theatre

R

• Revolve Theatre Company

S

• Scottish Mask and Puppet Centre
• Shakespeare 4 Kidz
• Sixth Sense Theatre Company
• Small World
• Spectacle Theatre
• StageFrightWEB - drama club

T

• Tag Theatre Company
• The Take-away Theatre Company
• Tam Tam Theatre
• Theatre Venture
• Theatre Workshop Ltd
  Performs History workshops to primary schools mainly in the North West
• Travelling Light Theatre

U

• Unicorn Theatre
• Union Theatre SE1
• Upstairs at the Gatehouse N6

V

• Visible Fictions Theatre Company

W

• Wee Stories Theatre for Children

X

Y

• Yellow Earth Theatre
• Y-Touring
• Youth Music Theatre: UK (YMT: UK)
  A youth arts organisation formed to bring together young people from around the UK in music theatre projects.
• Youth Theatre in the UK

Z