[Colly0410]

Britain had a thing for weird shaped low band (band 1) TV antennas. Up till about 1952/53 all the main high power transmitters used vertical polarization (rods vertical) & there were H, X & K shaped antennas to be seen on nearly every house roof. When they started firing up medium & low power transmitters in the mid 1950's most of them used horizontal polarization to reduce co-channel interference from the vertical polarization high power TX's. AFAIK vertical polarization was never used for TV in America, why Britain chose it for it's high power TX's I don't know...