High Quality Content by WIKIPEDIA articles! Radcot Lock is a lock on the River Thames in England just downstream of Radcot, Oxfordshire, on the southern bank. The lock was built by the Thames Conservancy in 1892 on the site of an old weir and flash lock. The weir is on the other side of the lock island. There was previously a weir on the site known as Clarke's, although the names Becks or Bucks were also used. It was removed in 1868 and the river was widened then. Proposals for the new pound lock and weir were raised in 1891 and implemented the following year.