You don’t have to pray. Just sit in the back and soak up the atmosphere. St. Martin-in-the-Fields on Trafalgar Square does a carol service that’s breathtaking.
The singing echoes off 300-year-old stone. You’ll feel like you’re in a Hallmark movie. Bring tissues—the candlelight always makes people cry.
At Southwark Cathedral, they let you ring the bell after the service. Yes, a real bell. Go on, annoy the tourists.