A magnet mounting system for a stator or rotor of an electrical machine, the rotor and stator having radial, axial and circumferential directions, the system comprising: a magnet mount comprising: a mounting surface for mounting one or more magnets; and a unit engaging portion comprising a mounting lip (191a, 191b) arranged to engage with a corresponding magnet securing unit for securing one or more magnets onto the mounting surface, one or more magnets mounted onto the mounting surface of the magnet mount; and a magnet securing unit for securing the one or more magnets onto the magnet mount, the magnet securing unit comprising: a securing lip portion shaped to engage with a corresponding portion of the magnet mount; a magnet holding portion comprising a magnet holding surface shaped to engage with the one or more magnets so as to hold the one or more magnets onto the magnet mount; and a connecting portion for connecting the securing lip portion and the magnet holding portion, wherein the magnet securing unit is shaped to restrict movement of the one or more magnets mounted onto the magnet mount away from the magnet mount when the securing lip portion is engaged with the corresponding portion of the magnet mount; characterised in that: the magnet securing unit further comprises a turbulence causing element shaped to cause turbulence to a fluid flowing relative to the turbulence causing element, wherein the turbulence causing element is arranged on an outer portion of the magnet securing unit opposite the securing lip portion, wherein at least one of a gap, recess, perforation or protrusion in the magnet securing unit forms the turbulence causing element. a magnet mount comprising: a mounting surface for mounting one or more magnets; and a unit engaging portion comprising a mounting lip (191a, 191b) arranged to engage with a corresponding magnet securing unit for securing one or more magnets onto the mounting surface, a mounting surface for mounting one or more magnets; and a unit engaging portion comprising a mounting lip (191a, 191b) arranged to engage with a corresponding magnet securing unit for securing one or more magnets onto the mounting surface, one or more magnets mounted onto the mounting surface of the magnet mount; and a magnet securing unit for securing the one or more magnets onto the magnet mount, the magnet securing unit comprising: a securing lip portion shaped to engage with a corresponding portion of the magnet mount; a magnet holding portion comprising a magnet holding surface shaped to engage with the one or more magnets so as to hold the one or more magnets onto the magnet mount; and a connecting portion for connecting the securing lip portion and the magnet holding portion, a securing lip portion shaped to engage with a corresponding portion of the magnet mount; a magnet holding portion comprising a magnet holding surface shaped to engage with the one or more magnets so as to hold the one or more magnets onto the magnet mount; and a connecting portion for connecting the securing lip portion and the magnet holding portion, wherein the magnet securing unit is shaped to restrict movement of the one or more magnets mounted onto the magnet mount away from the magnet mount when the securing lip portion is engaged with the corresponding portion of the magnet mount; characterised in that: the magnet securing unit further comprises a turbulence causing element shaped to cause turbulence to a fluid flowing relative to the turbulence causing element, wherein the turbulence causing element is arranged on an outer portion of the magnet securing unit opposite the securing lip portion, wherein at least one of a gap, recess, perforation or protrusion in the magnet securing unit forms the turbulence causing element. the magnet securing unit further comprises a turbulence causing element shaped to cause turbulence to a fluid flowing relative to the turbulence causing element, wherein the turbulence causing element is arranged on an outer portion of the magnet securing unit opposite the securing lip portion, wherein at least one of a gap, recess, perforation or protrusion in the magnet securing unit forms the turbulence causing element.