[3][4] Holy Trinity was designed by Ewan Christian – a noted church builder and restorer and architect of the National Portrait Gallery.

[5] The main phase of construction took place in 1878-79 and was funded from the proceeds of the sale of St Martin Outwich in the City of London.

[6] It is a Grade II-listed building; its 1975 designation noted both the reputation of its architect and its impressive High Victorian style with continental influences.

[6] It is constructed in red brick in the Early English style and has a slate roof.

Inside Holy Trinity is a screen brought from St Philip, Dalston after that church was damaged by bombing in December 1940.