Whilst searching for tickets for good concerts at the Bridgewater Hall, I discovered randomly that there is a concert hall, the Saffron Hall, at Saffron Walden County High School. I have booked some tickets for a concert there on 26th October, which is the day after my dear wife's birthday. Dido and Aeneas will be the main work, plus some other 17th century stuff.
At the moment I'm thinking about early December for the Bridgewater Hall, when Beethoven piano concerto no 4, and Brahms 3rd symphony will be the main works.