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The 4.95-3.5 WM14 is a quite popular tyre size used for the RAF aircraft. The tyres could have been used on the tail wheel of any of the following:
Anson, Albemarle, Battle, Fulmar, Swordfish, Hurricane, Lysander, Oxford, Defiant. There should be also a number on the hub prefixed AHO for the Dunlop wheel or number 83x for Palmer one that could help with the ID of the plane type. Please have a close up look at the hub. For instance, the hub for the Anson was AH5008 with the WM14 4.95-3 1/2' tyre.