UK
The Arts Council
http://www.artscouncil.org.uk/artforms/music/
Funding music development organisations, and directly funding artists.
BBC Performing Arts Fund
http://www.bbc.co.uk/performingartsfund/
A charity based at the BBC which offers support and funding for the performing arts.
The British Council
http://www.britishcouncil.org/arts-music-funding.htm
Organisation supporting cultural exchange, rather than artist development, but worth approaching for assistance with overseas tours and initiatives.
EMI Music Sound Foundation
http://www.emimusicsoundfoundation.com/
Awards and educational bursaries for young musicians, mainly aimed at the classical world, but including popular music.
Ideas Tap
http://www.ideastap.com/
Cash funding, opportunities and support for young people working in creative fields, including music.
Live UnLtd
http://www.LiveUnLtd.com/
Funding 11-21 year olds in community development projects, which could include musical performances, outreach activities, facilities etc.
Making Music
http://www.makingmusic.org.uk/
Support for amateur music projects, which could include bands starting out with aspirations to earn a living later.
Metropolis Group
http://www.metropolis-group.co.uk/events.php?p=0&s=0
A very successful recording studio, which runs a regular live event for unsigned artists, ‘Power Down’.
Musicians’ Benevolent Fund
http://www.helpmusicians.org.uk/help_you/
Financial assistance for musicians and their dependants in times of crisis, and also support and creative development for young artists.
The Musicians’ Union
http://www.musiciansunion.org.uk/
Subscription based membership, but huge amounts of information, advice and support, including free insurance.
PRS for Music Foundation
http://www.prsformusicfoundation.com/
A charitable arm of the live royalty collection organisation, funding new music in all styles.
The Roundhouse
http://www.roundhouse.org.uk/
A performing arts venue in London that also offers a huge range of facilities (recording/ rehearsal studios included) to artists 25 or under, for £15 a year.
Sound And Music
http://www.soundandmusic.org/
Funding for new music: awards based on creative merit, so not for the generic or mainstream.
Urban Development
http://www.urbandevelopment.co.uk/
Supporting new urban music, channeling ArtsCouncil funding.
Youth Music
http://www.youthmusic.org.uk/
Providing children and young people with access to a range of music related activities, which includes developing talent, and employment opportunities for musicians interested in education and outreach.
