Have you ever considered listening to some music inside St. Paul's Cathedral? It makes a nice change from all the usual venues like the Royal Albert Hall and Royal Festival Hall.
Every Sunday they invite one of the world's finest organists to play on the Grand Organ. It's totally free and you don't need a ticket, so it's a great way of sneaking a peek inside the cathedral. You won't be able to see the entire cathedral, though -- just the central area where they place the seating.
Craig’s review of St. Paul’s – “One of the things that I have always liked about St. Paul's Cathedral is the lousy piece of street planning outside the front door. As you walk up Ludgate Hill you'll expect to see the grand facade block off the top like a great barn door, but with the way the street curves over the brow all you get is three-quarters of the front. It's the worst piece of street planni… continued”
Lunchtime concerts at St. Martin-in-the-Fields – 10 Sep to 31 Dec 2018 (selected dates only) – St Martin-in-the-Fields in Trafalgar Square usually puts on a free classical music recitals a couple of times each week.
Guided tour of the Royal Albert Hall – Every day – This guided tour of the Royal Albert Hall will take you inside one of the balcony boxes for a fantastic view of the famous auditorium.
Bach to Baby, at the Queen’s Gallery – 26 Nov and 17 Dec 2018 – Take your baby to the Queen's Gallery for an informal classical concert and see the Russia Royalty & the Romanovs exhibition
The Nutcracker — at the British Museum – 3, 6 and 8 Dec 2018 – Ballet Central will be putting on a very special performance of The Nutcracker inside the Great Hall at the British Museum
Handel’s Messiah at St Paul’s Cathedral – 6 Dec 2018 – Enjoy a performance of Handel's Messiah by the Cathedral Choir and the City of London Sinfonia at St Pauls Cathedral
Shostakovich, Richard Strauss and Alban Berg – 7 Dec 2018 – The BBC Symphony Orchestra will be performing some works by Shostakovich, Richard Strauss and Alban Berg at Barbican Hall.
Carols by Candlelight at the Tower of London – 8 Dec 2018 – Enjoy a Christmas carol concert inside the candlelit Chapel Royal of St Peter ad Vincula at the Tower of London.
If you enjoy St. Paul’s then you might like to visit Brompton Oratory (catch the train from St Pauls to South Kensington), Westminster Abbey (catch the train from St Pauls to Westminster) and Westminster Cathedral (catch the train from St Pauls to Victoria)
Disclaimer: Event details can change at short notice and you should reconfirm everything before making plans