I'm a former Royal Marine, and I don't think ever played uckers. Not sure how widespread it is nowadays, but I think it might still be played at sea.
Different ships and parts of the Royal Navy (such as the Fleet Air Arm) will have their own variations on the rules. Words from Uckers such as "mixiblob" are common parlance in "Jackspeak" the language of the Royal Navy and Royal Marines.
You'll often find sailors have produced their own boards / pieces. For instance the last board I played on had pieces that had been crafted from 20mm shell casings which fit perfectly on that sized board.