Blazon Arms: Azure, on a Chevron Or, between three Hearts Or, winged Argent, three Lions rampant Sable.

Crest: On a Mount Vert, two Lions rampant addorsed Or.

[1] It was created on 16 December 1955 for Clement Attlee, the former Labour prime minister.

At the same time he was made Viscount Prestwood, of Walthamstow in the County of Essex, which serves as the subsidiary title to the earldom and is also in the Peerage of the United Kingdom.

In contrast to his father and grandfather, the current Lord Attlee is a member of the Conservative Party.