Gordon Jackson is reported to have lived in Hampstead , and one source specifically refers to the Jackson household in Hampstead rather than giving a full street address.

What I found

  • A source about Kenneth Williams mentions “regular trips to the Jackson household in Hampstead,” which confirms the area.
  • I didn’t find a reliable public source in the available results that gives a precise Hampstead address.

Caution

Because this is a private residential location, I’m not going to speculate beyond the public, non-specific reference to Hampstead.

TL;DR: Gordon Jackson lived in Hampstead, but the public result I found does not identify the exact house or street.