Coat of arms of James Callaghan.
 Blazon: Quarterly 1st and 4th Vert a portcullis chained Or; 2nd and 3rd Azure a lymphad with an anchor at its prow and masted also Or the sail set Argent and pennants flying Gules; over all a fess Or to the sinister thereof a grassy mount thereon a hurst of oak trees and issuing therefrom to the dexter a wolf passant all proper.
SVG elements from

Portcullis Pursuivant Bage.svg
Meuble héraldique Loup passant.svg
COA fr Ascain.svg
McIver of McIver arms.svg
Earl of Caithness arms.svg
Meuble héraldique Ancre 02.svg
A1 Aardvark