From what I can gather the main British tank was the Mk.V* at the start of the war and at some point 1942(ish?) they made the switch to the Mk.Vc. I only have figures for the Mk.Vc, but I think the earlier one was essentially the same except for no wire protection.
capacity: 750 litres
length: 14.6" (less valve)
width: 7.1" (after wire winding)
wall thickness: between 0.106 and 0.127 inches
working pressure: 1800 psi
Right cylinder capped by hemispherical ends.
Two layers of No.19 SWG piano wire (0.04" diameter) wound around the cylindrical portion under a tension of 30 lbs
EDIT: photo of some Mk.V tanks that were in an unfortunate firing trial accident
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