Having researched information regarding which orchestra it was and what they were playing I discovered the following:-

http://www.beauchampsinfonietta.org.uk/

Beauchamp Sinfonietta
Conductor Roger Coull
Vivaldi Concerto for four violins in B minor
Soloists: Roger Coull, Sue Meteyard, Lesley Watts, Sarah Curtis
Schubert Symphony No 4 (Tragic)
Brahms Serenade No 1 in D
Tickets: Adults £12, Concessions £10, Children and Students £2