St Martin Outwich was a parish church in the City of London, on the corner of Threadneedle Street and Bishopsgate.

[1] The patronage was in the hands of the earls of Surrey and then of the Outeswich family, until it was transferred to the Merchant Taylors' Company.

[4] The first stone was laid on 4 May of that year,[2] and the new building, to the designs of Samuel Pepys Cockerell, was consecrated in November 1798.

There was a fresco of the Ascension by John Francis Rigaud over the altar, which had deteriorated badly within ten years of being painted.

[1] The heavily rusticated east front (illustrated above), facing into Bishopsgate, was described by James Peller Malcolm as "a complete representation of a gaol, accompanied by marks of extreme strength, very ill suited to its diminutive outline."