A fuel flow valve, for example for use in supplying fuel to a gas turbine engine. Example embodiments disclosed include a staging fuel valve (300), comprising: a valve housing (301) having first and second fuel inlets (306, 307) and first and second fuel outlets (305, 308); a piston (302) slidably mounted within a chamber (303) in the valve housing (301) and being moveable between a first position in which the first inlet (306) is in fluid communication with the first outlet (305) while the second inlet (307) and second outlet (308) are blocked, and a second position in which the second inlet (307) is in fluid communication with the second outlet (308). The piston (302) comprises a magnet assembly (312) and the valve housing (301) comprises a coil (313) arranged to provide, when energised, a magnetic force to actuate the piston (302) between the first and second positions.