[2][3] They were intended for a dual role of patrol service in overseas stations in peacetime and minesweeping during war.

[5][6] Two Admiralty 3-drum water-tube boilers fed two geared steam turbines which drove two propeller shafts.

[5] Weston, which was nicknamed "Aggie on Horseback" in service (based on the ship's namesake, Weston-Super-Mare and the Victorian philanthropist Agnes Weston, founder of the Royal Sailors' Rests in Plymouth and Portsmouth),[10][11] came under command of the Commander-in-Chief, Africa on commissioning, where she served until August 1935, when the sloop joined the East Indies Station, operating in the Red Sea.

[14] On 24 February 1940, Weston rescued 27 survivors from the merchant ship Royal Archer, which had been sunk by a mine off the Firth of Forth earlier that day.

All of U-13's crew were picked up by Weston, while a set of standing orders from Admiral Karl Dönitz prohibiting the rescue of survivors by German U-boats in British waters was also recovered.

[20][21] From January 1941, Weston was part of the Northern Escort Force, and from July 1941, the Londonderry Sloop Division.

[22] On 29 November 1941, Weston was escorting Convoy OS 12 when it was attacked by the German submarine U-43, which sank two freighters before being driven off by the sloops Totland and Sennen.

[10] In late February 1943, Weston formed part of the escort for the tanker convoy UC 1, consisting of 32 ships (mainly empty oil tankers), travelling from Britain to Curaçao in the Caribbean, with a Royal Navy close escort of four sloops and two frigates,[c] supported by a support group of four US Navy destroyers.

[27] In June 1945, Weston was laid up in reserve, and on 22 May 1947, she was transferred to British Iron & Steel Corporation for scrapping.