Drilling apparatus and method, the apparatus comprising: a first robot (10); a first member (30) (e.g. a pressure foot) and a drilling tool (38) both coupled to the first robot (10); a second robot (12); and a second member (52) coupled to the second robot (12); wherein the apparatus is arranged to press the members (30, 52) against opposite sides of a part to be drilled (2, 100) (e.g. an aircraft panel) so as to hold the part (2, 100) and prevent deflection of at least a portion of the part (2, 100); and the first member (30) and the drilling tool (38) are arranged such that the drilling tool (38) may drill into the portion of the part (2, 100) of which deflection is opposed from the side of the part (2, 100) pressed against by the first member (30). The robots (10, 12) may be robotic arms.