Post war, Modeste served with the British Far East Fleet, and took part in the Suez Crisis.

On 5 October 1942, the British Admiralty ordered two Modified Black Swan-class sloops from Chatham Dockyard, Modeste and Nereide, as part of the 1941 construction programme for the Royal Navy.

[9] The end of the Second World War, and post-war manpower restrictions meant that Modeste was initially limited to second-line tasks,[13] being attached to the shore establishment HMS Excellent at Portsmouth as gunnery training ship in February 1946, before transferring to the shore establishment HMS Vernon, also at Portsmouth, for use as an accommodation ship for Sea Cadets.

[14][15] On 15 April 1947, Modeste and the sloop Fleetwood went to the aid of the Panamanian ship Georgie, which had run aground off St Catherine's Point, Isle of Wight.

[17][20] Modeste returned to Portsmouth on 22 September 1958, paying off into reserve, having completed four full commissions at part of the 3rd Frigate Squadron.