An injection nozzle for injecting fuel into a combustion chamber of an internal combustion engine, the injection nozzle comprising: a nozzle body (13, 53) having a bore (17, 57, 517) for receiving fuel from a supply line (12, 512) for pressurised fuel; an outlet (16, 56) from the bore (17, 57, 517) for delivering fuel to the combustion chamber, in use; and a valve needle (15, 55, 515) defining a needle axis and being slidable within the bore (17, 57, 517) between a closed state in which fuel flow through the outlet (16, 56) into the combustion chamber is prevented, and an injecting state in which fuel flow through the outlet (16, 56) into the combustion chamber is enabled, movement of the needle (15, 55, 515) being controllable by varying the fuel pressure within a control chamber, in use; the needle (15, 55, 515) comprising a needle guide portion (22, 62) arranged to guide sliding movement of the needle (15, 55, 515) within the bore (17, 57, 517); the injection nozzle further comprising a restriction (21a, 61a, 121a, 221a, 321a-d, 463, 521a, 521b) within the bore (17, 57, 517) for restricting the flow of fuel through the bore (17, 57, 517), and a restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) having an upstream side (21 b, 61 b, 461 b) and a downstream side (21 c, 61 c, 461 c); the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) being moveable with the needle (15, 55, 515) and located upstream of the needle guide portion (22, 62); wherein the restriction (21a, 61a, 121a, 221a, 321 a-d, 463, 521a, 521b) is defined between the bore (17, 57, 517) and a peripheral edge (21f, 61f, 461f) of the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521 b), and wherein, when the needle (15, 55, 515) is in the injecting state in use, the pressure of fuel at the outlet (16, 56) is substantially the same as the pressure of fuel in the bore (17, 57, 517) immediately downstream of the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) and is less than the pressure of fuel supplied to the bore (17, 57, 517) from the supply line (12,512); wherein at least a part of the downstream side (21c, 61c, 461c) of the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) comprises a bevelled surface (21d, 61d) that extends to the peripheral edge (21f, 61f, 461f), the bevelled surface (21d, 61d) being non-perpendicular to the needle axis; wherein the downstream side (21c, 61c, 461c) comprises a downstream face (21e, 61e, 461e). characterized in that. the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) has a larger diameter than the needle guide portion (22, 62) of the needle (15, 55) and, wherein the downstream face (21e, 61e, 461e) is normal to the needle axis. a nozzle body (13, 53) having a bore (17, 57, 517) for receiving fuel from a supply line (12, 512) for pressurised fuel; an outlet (16, 56) from the bore (17, 57, 517) for delivering fuel to the combustion chamber, in use; and a valve needle (15, 55, 515) defining a needle axis and being slidable within the bore (17, 57, 517) between a closed state in which fuel flow through the outlet (16, 56) into the combustion chamber is prevented, and an injecting state in which fuel flow through the outlet (16, 56) into the combustion chamber is enabled, movement of the needle (15, 55, 515) being controllable by varying the fuel pressure within a control chamber, in use; the needle (15, 55, 515) comprising a needle guide portion (22, 62) arranged to guide sliding movement of the needle (15, 55, 515) within the bore (17, 57, 517); the injection nozzle further comprising a restriction (21a, 61a, 121a, 221a, 321a-d, 463, 521a, 521b) within the bore (17, 57, 517) for restricting the flow of fuel through the bore (17, 57, 517), and a restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) having an upstream side (21 b, 61 b, 461 b) and a downstream side (21 c, 61 c, 461 c); the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) being moveable with the needle (15, 55, 515) and located upstream of the needle guide portion (22, 62); wherein the restriction (21a, 61a, 121a, 221a, 321 a-d, 463, 521a, 521b) is defined between the bore (17, 57, 517) and a peripheral edge (21f, 61f, 461f) of the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521 b), and wherein, when the needle (15, 55, 515) is in the injecting state in use, the pressure of fuel at the outlet (16, 56) is substantially the same as the pressure of fuel in the bore (17, 57, 517) immediately downstream of the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) and is less than the pressure of fuel supplied to the bore (17, 57, 517) from the supply line (12,512); wherein at least a part of the downstream side (21c, 61c, 461c) of the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) comprises a bevelled surface (21d, 61d) that extends to the peripheral edge (21f, 61f, 461f), the bevelled surface (21d, 61d) being non-perpendicular to the needle axis; wherein the downstream side (21c, 61c, 461c) comprises a downstream face (21e, 61e, 461e). characterized in that. the restrictive element (21, 61, 121, 221, 321, 421, 461, 521a, 521b) has a larger diameter than the needle guide portion (22, 62) of the needle (15, 55) and, wherein the downstream face (21e, 61e, 461e) is normal to the needle axis.