The portion of the estate north of Green Lane and Bishopsford Road is in Merton, the remainder is in Sutton.

The Wandsworth Poor Lands lay on either side of Wrythe Lane at the southernmost part of the St. Helier estate footprint.

He bequeathed £200 to buy land, the yearly rental of which was to purchase apprenticeships for two poor children who had been born in the parish.

[6] The estate's Bishop Andrewes Church, in Wigmore Road, was designed by the architect Geddes Hyslop in 1933.

[7] Today ownership of housing on the estate is split between private and local authority, with many people taking advantage of the right to buy scheme since the 1970s.