This tower is a survivor and was originally part of the rebuilt Church of St Olave, Old Jewry.

The medieval church, which was apparently built on the site of an earlier Saxon church, originally dated from 12th century. Its name referred to both the saint to whom it was dedicated – the patron saint of Norway, St Olaf (Olave) – and its location in the precinct of the City that was largely occupied by Jews (up until the infamous expulsion of 1290).

The church, which is also referred to as Upwell Old Jewry (this may have related to a well in the churchyard), was the burial place of two former Lord Mayors – mercer Robert Large (William Caxton was his apprentice) and publisher John Boydell (who apparently washed his face under the church pump each morning). Boydell’s monument was later transferred to St Margaret Lothbury.

The church was sadly destroyed in the Great Fire of 1666 but it was among those rebuilt under the eye of Sir Christopher Wren in the 1670s. It’s from this rebuilding that the current tower dates.

At this time, the parish was united with that of St Martin Pomeroy (which had already shared its churchyard and which was also destroyed in the Great Fire).

Wren’s church was eventually demolished in 1887 as moves took place to consolidate church parishes under the Union of Benefices Act – the parish was united with that of St Margaret Lothbury and proceeds from the sale were used to fund the building of St Olave, Monor House. It’s worth noting that a Roman pavement was found on the site after the church demolition.

The tower (and the west wall), meanwhile, survived. The tower was subsequently turned into a rectory for St Margaret Lothbury and later into offices.

Interestingly, the Grade I-listed, Portland stone tower is said to be the only one built by Wren’s office which is battered – that is, wider at the bottom than the top. It’s topped by some obelisk-shaped pinnacles and a weather vane in the shape of a sailing ship which was taken from St Mildred, Poultry (was demolished in 1872).

The tower’s former clock was built by Moore & Son of Clerkenwell. It was removed at the time of the church demolition was installed in the tower of St Olave’s Hart Street. The current clock was installed in 1972.