Patrol vessels sailing under the White Ensign.
HMS Protector (Chartered DNV ICE-05 Ice Patrol Ship) - Displacing 5000 T, LOA 89m, 15 kts, Crew of 88, helideck, 2x Miniguns, 4x GPMG, 12 Pax
HMS Tyne, Severn and Mersey (OPV (Fisheries)) - Displacing 1700 T, LOA 79.5m, 20 kts, Crew of 30, no helideck, 1x 20mm, 2x GPMG, 20 Troops
HMS Clyde (OPV-H (Fisheries)) - Displacing 2000 T, LOA 81.5m, 21 kts, Crew of 36, helideck, 1x 30mm, 2x Miniguns, 5x GPMG, 110 Troops
HMS Forth, Medway, Trent (+2) (OPV (Fisheries)) - Displacing 2000 T, LOA 90.5m, 25 kts, Crew of 58 (39 at sea, 19 on shore - rotating), helideck, 1x 30mm, 2x Miniguns, 2x GPMG, 50 Troops
RN also sails 17x 20m Archer patrol boats of 54 T - two of which are fitted for not with 1x 20mm and 3x GPMG
As well it mans 2x 16m Scimitar patrol boats of 24 T - fitted with 2x GPMG.
https://en.wikipedia.org/wiki/HMS_Protector_(A173)
https://en.wikipedia.org/wiki/River-class_patrol_vessel
https://www.gov.uk/government/news/royal-navy-prepares-for-future-uk-fishery-patrols
https://en.wikipedia.org/wiki/Archer-class_patrol_vessel
https://en.wikipedia.org/wiki/Scimitar-class_patrol_vessel
The AOPS appears to be conforming to the traditions of the White Ensign.
It will be performing a task the RN undertakes in home waters.
It does not appear to be particularly under-manned, under-armed, under-equipped, particularly slow or un-prepared for activity in the ice.