The heir apparent is the present holder's son, the Hon. John Ronald Muir Lucas (b. 1995).
Coat of arms of Baron Lucas of Chilworth
Crest
A Representation of Apollo affrontée Or
Escutcheon
Per fess wavy Or and Azure in chief between two Annulets a Rose Gules barbed and seeded proper and in base two Bars wavy Argent surmounted by a Bull's Head caboshed Sable
Supporters
Dexter: a Lion Or; Sinister: a Russian Bear Sable, each resting the interior paw upon an Annulet therein a Rose Gules barbed and seeded proper