The Club was founded in 1904 in the Porlock Vale, starting with 10 players. About 1910 increased membership forced a move to Dunster Lawns and by 1938 the Club handbook described the WSPC as 'one of the coming clubs in this country.'  The Club initially played in the Spring and Autumn, but in 1937 play took place throughout the summer. In those heady days it was not unknown for players to stag-hunt during the day, be collected from the end of the hunt and taken to Dunster in the late afternoon to play polo!

During the period on either side of the First World War, the Club assumed an important place in country polo.  Ponies often arrived by rail at Dunster station and would be hacked to their stables in and around Minehead.  Because of the war, polo ceased in 1914 and did not start again at Dunster until 1920. In 1921 the Club obtained the services as Manager of Capt. Maurice Kingscote, a well-known player at that time.  This put the Club firmly on the polo map.

Over the ensuing years play at Dunster went from strength to strength, attracting notable Army teams and many well known players to the Club tournaments. In 1923, Winston Churchill played in a match on Dunster Lawns, and in 1925 the Jodhpur Polo Team spent two months playing at the WSPC. When the team left Dunster, the Maharajah of Jodhpur presented the Club with the pavilion which is still in existence by the old ground. In 1933, the Maharajah brought down his team after they had won the Coronation Cup and the Hurlingham Champion Cup, his team's last match at Dunster Lawns being attended by over 8,000 spectators.

The outbreak of the Second World War in 1939 meant that the Club went into abeyance, and as far as is known, the 17 or so trophies were left in the keeping of the last winners with a request that they be returned when play resumed. However, although efforts were made to restart the Club, it was not until 1990 that a few enthusiasts determined to see polo played again at West Somerset succeeded in re-launching the Club. 

Dunster Lawns was not available, having been ploughed for agricultural use during the war, so an area of land owned by the then Carnarvon Arms Hotel was leased and a small ground established.  This enabled the Club to start play, with most players bringing along their hunters if they could stand a stick swinging between their ears!

Later, a full-sized ground was created, and the original pitch changed to a practice field. The Club gained affiliation to the Hurlingham Polo Association, which administers the sport.  Ponies are now almost all polo bred and trained, and the standard of play has improved significantly. Particular efforts to encourage Pony Club and other young players has proved most successful, with some notable youngsters moving into the senior game and progressing well up the handicap list.