|Launched:||25 September 1957|
|Completed:||17 April 1958|
|Class and type:||Ham-class minesweeper|
|Notes:||Pennant number(s): M2790 / IMS90|
HMS Thatcham was one of 93 ships of the Ham-class of inshore minesweepers.
Their names were all chosen from villages ending in -ham. The minesweeper was named after Thatcham in Berkshire.