The church has always been surrounded by a graveyard for the burial of the dead. Burial registers have recorded all burials here since 1559 (baptism and marriage registers survive from the same date). By 1819 the churchyard had become full and it was enlarged by incorporating part of Coney Green on the south side. It again became full and in 1867 it was closed to burials in new graves, although burials continued of family members in existing graves. The last such burial was in 1948.

There are many tombstones, some of which date from the seventeenth century, but not all have survived the passage of time very well. Two of special interest are those of Major General John Russell (d.1735) and John Rich (d.1761). Major General Russell, who lived a Cedar House, was a grandson of Oliver Cromwell. His daughter Mary married Revd. Richard Mills, Vicar of Hillingdon 1724-1777 and was mother of Revd Thomas Mills, Vicar of Hillingdon 1777-1810, both of whom are buried nearby. John Rich, whose entry in the burial register records his occupation as 'comedian' was the originator of English pantomime and lessee throughout his life of the theatre that later became Covent Garden Opera House. He lived locally.

Information used from:

'A Guide For The New Millennium - Hillingdon Parish Church' by Audrey Wormald (March 2002) which can be purchased at the back of church. Price: £1.00