Depending on its size; and the hydraulic connection fitments at the airframe support attachment end; the lower jack is very similar to a 27Q 68 Radiator Shutter Jack or possibly a 27Q 44 Wheel Fairing Door Jack. (Both Typhoon/Tempest.)
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I’ll check with our Dowty bod… (Yes, we actually have one of those… an ex-service engineer)… as their identification numbers are very different to the RAF Sector numbers. If he identifies the lower one as what it appears to be; we could really use one of those for our old girl…

http://www.jetagemuseum.org/Typhoon.aspx