The RN had something like 132 SK. That is a lot of Christmas trees.
The Sea King was a pretty reliable beast too, provided what you wanted was just to get airborne and stay there for 4 hours.
The type of SK is also unclear: There are posts about SAR/aeromed usage, pictures of Mk4's, and reports that they are Mk 5's. My guess is they are actually Ex SAR Mk5 frames. If so you don't need to worry about the mission system stuff too much. There is also still a fair bit of UK expertise which can be applied without needing to be anywhere near UKR.
Still, just 3 aircraft is not a lot of capability, but Zelensky has accepted them, so someone sees a use.
N