HMS Worcester headstones relates to the Channel Dash
HMS Wren headstone relates to this from Wikipedia
On the 27 July 1940 Wren, alongside HMS Montrose, was providing anti-aircraft protection for minesweeping operations off Aldeburgh, Suffolk. She came under heavy and sustained dive bombing attack by 15 Junkers Ju-87 aircraft and was damaged by several near misses which holed her below the waterline. Collapsed bulkheads caused heavy flooding which led her to sink quickly, killing 37 of her crew. Wren's survivors were rescued by the minesweepers