Hi
You can purchase the same image online from Collage (London Archives - LMA and Guildhall Library) the images collection - fantastic collection of pictures of London and beyond.
http://collage.cityoflondon.gov.uk/collage/app?service=external/Index&sp=9&sp=X&sp=cSThe GENUKI website which is very good for London and Middlesex parish church information links you to the East of London Family History Society for further information on St Thomas' Square Chapel giving the denomination and date of surviving records
http://homepages.gold.ac.uk/genuki/MDX/Hackney/churches.htmSt Thomas Square Chapel
(Presbyterian)
Mare St
Baptisms 1765-1837
Burials 1787-1876: The National Archives
Baptisms 1814-1898
Marriages 1838-1848: Hackney Archives
The link to the London burial grounds website (in the help guide at the top of the London and Middlesex two main boards - a guide to burials in the London area) gives you details of the burial ground for the church (churches tend to have burial grounds or churchyards not cemeteries which are usually larger and do not have community (parish) churches attached to them- just chapels for the burial service - non-conformist churches were more likely to have burial grounds that might be referred to as cemeteries)
http://www.burial.magic-nation.co.uk/bghackney.htmAt the beginning of the start of civil registration 1st July 1837 most non-conformist churches (those churches that were not Anglican) agreed to deposit their records with the government in return for having them recognised as legal documents. All but Catholic churches tended to deposit their records which is how these records largely pre 1837 are found at The National Archives. Most of the records except for burials and the Quaker records have been indexed and placed on the IGI. In the case of St Thomas it looks as if all the burial records came into the possession of the government which might indicate certainly the burial ground records ceased in 1876 (though there may have been little burying there since the 1850s).
Information on Mare Street
http://www.british-history.ac.uk/report.aspx?compid=22697Regards
Valda