Table fence for a mitre saw with top table

A saw comprising: a base assembly (102, 104) connected to a mounting portion (110); a motor unit (118) which is: pivotally mounted on the mounting portion (110) to allow the motor unit (118) to pivot towards or away from the base assembly (2, 4) to perform chop cuts; and/or slidingly connected to the mounting portion (110) to allow the motor unit (118) to slide across the base assembly (2, 4) to perform sliding cuts; the motor unit (118) having an output drive spindle upon which a circular saw blade (120) can be rigidly mounted to be rotationally driven by the motor unit (118); wherein there is further provided a table (114) mounted on the motor unit (118) to enable the saw to act as a table saw and a table fence 300 capable of being releaseably attached to the table 114; characterised in that the table fence (300) comprises a guide plate (306); a guide fence 302 moveably connected to the guide plate 306; and a locking mechanism which can releaseably lock the position of the guide fence (302) to the guide plate (306) wherein, when the locking mechanism is activated, the guide fence (302) is held rigidly relative to the guide plate (306) and when it is released, it allows relative movement between the guide plate (306) and the guide fence (302) so that both the position and the orientation of the guide fence (302) relative to the guide plate (306) can be altered.