The Category A Cappella Groups is a subset of Singing Groups and Choirs.

The Category Ballet Companies is a subset of Opera and Ballet Performances.

The Category Barbershop Choruses is a subset of Singing Groups and Choirs.

The Category Big Bands is a subset of Orchestras and Bands.

The Category Brass and Silver Bands is a subset of Orchestras and Bands.

The Category Brass Ensembles is a subset of Concert Music Ensembles.

The Category Cathedral and Church Choirs is a subset of Singing Groups and Choirs.

The Category Chamber Choirs is a subset of Singing Groups and Choirs.

The Category Chamber Duos is a subset of Chamber Music Recitalists. The following Chamber Duos are amongst the most active in UK concerts and recitals. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- Aurora Percussion Duo

- Eden Stell Guitar Duo

- Foyle-Štšura Duo

- Goldman Sisters

- Kapsetaki Twins

- Scott Brothers Duo

- The Night Watch

The Category Chamber Ensembles is a subset of Concert Music Ensembles.

The Category Chamber Orchestras is a subset of Orchestras and Bands.

The Category Chamber Quartets is a subset of Chamber Music Recitalists. The following Chamber Quartets are amongst the most active in UK concerts and recitals. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- A4 Brass Quartet

- Graffiti Classics

- Laefer Quartet

- Liquorice Clarinet Quartet

- London Klezmer Quartet

- Pocket Sinfonia

- Primrose Piano Quartet

- Red Priest

The Category Chamber Quintets is a subset of Chamber Music Recitalists. The following Chamber Quintets are amongst the most active in UK concerts and recitals. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- Atéa Wind Quintet

- Aurora Ensemble

- Chelys Consort of Viols

- Ensemble DeNOTE

- Fontanella Recorder Quintet

- Fretwork

- Galliard Ensemble

- Onyx Brass

The Category Chamber Trios is a subset of Chamber Music Recitalists. The following Chamber Trios are amongst the most active in UK concerts and recitals. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- Aurora Trio

- Classic Rhythm

- Dominic Alldis Trio

- Eblana String Trio

- Kosmos Ensemble

- Pelléas Ensemble

The Category Choral Societies is a subset of Singing Groups and Choirs.

The Category Clarinet Ensembles is a subset of Concert Music Ensembles.

The Category Community Choirs is a subset of Singing Groups and Choirs.

The Category Community Orchestras and Bands is a subset of Orchestras and Bands.

The Category Concert and Wind Bands is a subset of Orchestras and Bands.

The Category Concert Conductors and Directors has been placed within the Performers ANNEXE. The following Conductors and Directors are amongst the most active in organizing and delivering classical concerts in the UK. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- Mark Elder

- Mirga Gražinytė-Tyla

- Kirill Karabits

- Stephen Layton

- Gareth Malone

- Geoffrey Paterson

- Vasily Petrenko

The Category Contemporary Ensembles is a subset of Concert Music Ensembles.

The Category Early Music Ensembles is a subset of Concert Music Ensembles.

The Category Flute Ensembles is a subset of Concert Music Ensembles.

The Category Folk Music Ensembles is a subset of Concert Music Ensembles.

The Category Gaelic Choirs is a subset of Singing Groups and Choirs.

The Category Gospel Choirs is a subset of Singing Groups and Choirs.

The Category Guitar Ensembles is a subset of Concert Music Ensembles.

The Category Handbell Ringers is a subset of Concert Music Ensembles.

The Category Jazz Choirs is  a subset of Singing Groups and Choirs.

The Category Ladies Choirs is a subset of Singing Groups and Choirs.

The Category LGBT+ Choirs is a subset of Singing Groups and Choirs.

The Category Light Orchestras is a subset of Orchestras and Bands.

The Category Male Voice Choirs is a subset of Singing Groups and Choirs.

The Category Military Bands is a subset of  Orchestras and Bands . 

The Category Opera Companies is a subset of Opera and Ballet Performances.

The Category Operatic and Dramatic Societies is a subset of Opera and Ballet Performances.

The Category Percussion Ensembles is a subset of Concert Music Ensembles.

The Category Piano Trios is a subset of Chamber Trios. The following Piano Trios are amongst the most active in UK concerts and recitals. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- Amatis Piano Trio

- Aquinas Piano Trio

- Bukolika Piano Trio

- English Piano Trio

- Fidelio Trio

- Greenwich Trio

The Category Pipe Bands is a subset of Orchestras and Bands.  

The Category Recorder Ensembles is a subset of Concert Music Ensembles.

The Category Small Vocal Groups is a subset of Singing Groups and Choirs. 

The Category String Ensembles is a subset of Concert Music Ensembles.

The Category String Quartets is a subset of Chamber Quartets. The following String Quartets are amongst the most active in UK concerts and recitals. Clicking on a Name of interest should link you to a relevant external Website (or Facebook Page):

- Allegri String Quartet

- Benyounes Quartet

- Brodsky Quartet

- Carducci String Quartet

- Castalian String Quartet

- Consone Quartet

- Coull Quartet

- Dante Quartet

- Doric String Quartet

- Elias String Quartet

- Fitzroy Quartet

- Fitzwilliam String Quartet

- Maxwell Quartet

- Navarra String Quartet

- Piatti Quartet

- Sacconi Quartet

- Solem Quartet

The Category Symphony Orchestras is a subset of Orchestras and Bands.

The Category Traditional Music Choirs is a subset of Singing Groups and Choirs.

The Category Traditional Orchestras and Bands is a subset of Orchestras and Bands. 

The Category West Gallery Quires is a subset of Singing Groups and Choirs.  

The Category Young Persons Concert Music Ensembles is a subset of Concert Music Ensembles.

The Category Young Persons Musical Theatre is a subset of Operatic and Dramatic Societies.

The Category Young Persons Orchestras and Bands is a subset of Orchestras and Bands.

The Category Young Persons Singing Groups and Choirs is a subset of Singing Groups and Choirs.