Sinfonia Of Leeds
- Amateur chamber orchestra, enjoying a close relationship with Opera North. Information on their events diary, reviews, and a discography.
- http://homepage.ntlworld.com/tykepenguin/sol/

Orchestra of Square Chapel
- Based at the Square Chapel Centre for the Arts, Halifax. Concert schedule and photos.
- http://www.aqsf29.dsl.pipex.com/new/

London Sinfonietta
- Specialises in contemporary classical music. Comprehensive site includes events, booking, archive of reviews, interviews and details of musicians.
- http://www.londonsinfonietta.org.uk

Ashford Baroque Ensemble
- Amateur orchestra in Feltham, Middx. Rehearses fortnightly on Monday evenings.
- http://www.aowq17.dsl.pipex.com/StM/AshfordBaroqueEnsemble.htm

I Maestri
- Conductors' training orchestra. Information, conductors' and soloists' biographies, concerts.
- http://www.i-maestri.org/

Glasgow Chamber Orchestra
- Amateur orchestra. Schedule, history, friends.
- http://www.gco.org.uk

La Serenissima
- Specialize in the music of Antonio Vivaldi and his contemporaries, bringing works seldom if ever heard to the concert platform. Information about their recordings, concert schedule, with reviews and biographies.
- http://www.laserenissima.co.uk/

St. George's Chamber Orchestra
- A professional orchestra for South East London and Kent. Includes concert information, player profiles, directions, and ticket details.
- http://www.sgco.co.uk

London Octave
- String ensemble specialising in the baroque, classical and romantic eras. Profile of members and details of performances.
- http://www.btinternet.com/~dietrich.bethge/

Manchester Camerata
- Chamber orchestra based in Manchester. Details of their concert schedules, their education and community work, with background information on their support and members.
- http://www.manchestercamerata.com/

Kensington Chamber Orchestra
- Amateur orchestra performing in London. Concert schedules.
- http://www.kco.org.uk/

Camden Chamber Orchestra
- Non-professional London chamber ensemble. Information on the orchestra, schedule of concerts and rehearsals, notice board, reviews, and ticket information.
- http://www.camdenchamberorchestra.org.uk/

Ten Tors Orchestra
- Professional chamber orchestra touring Devon and Cornwall: details of concerts, new commissions, concerts and musicians.
- http://www.tentorsorchestra.co.uk/

Sale Chamber Orchestra
- Gives concerts in Sale, Manchester and surrounding area; information about concerts and the Trafford Young String Player award.
- http://www.salechamberorchestra.co.uk/

The English Concert
- Baroque orchestra based in London. Includes a history, concert schedule, and discography.
- http://www.englishconcert.co.uk/

City of London Sinfonia
- History of this chamber orchestra, with their concert schedule, details of their education and community programs, and information about their recordings.
- http://www.cityoflondonsinfonia.co.uk/

London Soloists Chamber Orchestra
- Independent chamber orchestra performing in central London. History, concert schedule, contact information.
- http://www.londonsoloists.com/

Camerata of London
- Flexible chamber orchestra and ensembles specialising in baroque, classical and new music. Information, sample programmes.
- http://www.camerataoflondon.org/

Scottish Chamber Orchestra
- Profile of the orchestra, with a history, concert programme, booking details, and merchandise. Also includes their education projects, and information about the SCO Chorus.
- http://www.sco.org.uk/

Primavera Chamber Orchestra
- Information about the orchestra, with player profiles. Also includes a concert schedule, and details of their education programmes.
- http://primaveramusic.co.uk/

London Mozart Players
- British orchestra directed by Andrew Parrott. Information about concerts, recordings, and their education programme.
- http://www.lmp.org/

English Classical Players
- London-based ensemble specialising in music of the Classical period. Brief profile and contact details.
- http://www.musiciansgallery.com/start/orchestras/english_classical_players.htm

The Academy of Ancient Music (AAM)
- Period instrument ensemble. News, history, biographies, discography, schedule and ticket information.
- http://www.aam.co.uk/