Nicholas Leigh was the Tudor-era Leigh landholder associated with Addington. In 1544 he negotiated with Henry VIII for former religious-house properties at Addington, including Addington Rectory and Addington Temple, thereby consolidating the wider Leigh estate.

The 1544 exchange concerns the religious-house manors and should be distinguished from the older Addington Aguillonds or Bardolfs manor.

Research sources:
- Historic England, Addington Palace listing, entry 1000790; Surrey County Council, Seals among the deeds of the Leigh-Bennett family; Surrey History 2021. — https://historicengland.org.uk/listing/the-list/list-entry/1000790?section=comments-and-photos

The 1544 transaction involved an estate formerly held by the Knights Hospitaller and should not be confused with the separate pre-existing Leigh holding.

Research sources:
- Surrey County Council, 'Seals among the deeds of the Leigh-Bennett family', summarising the 1544 exchange; corroborated by Surrey Archaeological Collections, 'Notices of the Family of Leigh of Addington'. — https://www.surreycc.gov.uk/culture-and-leisure/history-centre/marvels/seals-among-the-deeds-of-the-leigh-bennett-family

He was the first securely documented lay holder of Addington Temple after the Dissolution.

Research sources:
- Leveson-Gower, Notices of the Family of Leigh of Addington, Surrey Archaeological Collections, volume 7, abstract no. 10; A Topographical History of Surrey, Account of the Manors of Addington; Surrey County Council, History Centre. — https://archaeologydataservice.ac.uk/archiveDS/archiveDownload?t=arch-379-1%2Fdissemination%2Fpdf%2Fvol_7%2Fsurreyac007_077-123_leveson-gower.pdf