Given the bomber war was largely operated out of east anglia, the GW management may have considered it "out of area." I think, by way of comparison, that few of the castles, halls etc were named out of area. Re Fairey Battles and Blenheims, there were some suicidally brave crews in the Battle of France, eg Garland / Gray's bombing of a bridge in Belgium. Quite right to honour and remember.
(Apols for the off topic nature!)