A Songs (Anglo Plugging Music)

popular

A+G Songs

popular

A-Bomb Ltd

popular

ABRSM

classical

Accorder Music Ltd

popular

Adlais Music Publishers

classical

Alan Simmons Music

classical

Alarcon Music Limited

popular

ALAW

classical

Alfred Publishing Co (UK) Ltd

popular, classical

All-Media Music Ltd

popular

Amphonic Music Ltd

library

Anglia Music Company

popular

Angus Publications

popular

Annie Reed Music Ltd

popular

Ariel Music

classical

Artful Production Music

library

Ashley Mark Publishing Company - A Division of Summerfield Musical Instruments Ltd

popular, classical

Associated Music International Ltd

popular

Asterisk Music

Astute Music Ltd

classical

Audio Network plc

popular, classical