A conversation at work reminded me of reading a report from a commons select comity of 1862. The best bit reads:-

For measures of capacity, we have 20 different bushels: we can scarcely tell what the hogshead means. For ale it is 54 gallons, for wine 63. Pipes of wine vary in many ways; each sort of wine seems to claim the privilege of a different sort of pipe. For measures of weight, we have about 10 different stones; a stone of wool at Darlington is 18 lbs.; a stone of flax at Downpatrick is 24 lbs.; a stone of flax at Belfast is only 16 3/4 lbs.; but it is also at Belfast 24 1/2 lbs., having in one place two values. The hundredweight may mean 100 lbs., 112 lbs., or 120 lbs. If you buy an ounce or pound of anything, you must inquire if it belongs to Dutch, troy, or avoirdupois weight.

I am glad that we have moved on from that situation, but why people still resist the move to a full metric system, I don’t know.