St Anne's Limehouse:
A Nicholas Hawksmoor masterpiece.
Seen previously on a Limehouse circuit.
From the website history page:
St Anne’s Church has a long-standing connection to the Royal Navy, and its current Rector is honorary Chaplain to the Royal Navy. Its clock is the highest church clock in London. It was designed as a special maritime clock for shipping on the Thames: it chimed every 15 minutes to guide the 6000 ships that moored in the docks every day. These days, it chimes every hour. Above the clock, there is a golden ball, which until recently was a Trinity House sea mark for navigating the Thames.
And not forgetting the pyramid:
A distinctive pyramid, originally planned to be put on one of the corners at the east end of the building, now stands in the churchyard and is Grade II listed.