AN INJECTION APPARATUS

Disclosed is an auto-injection apparatus (10) for receiving a syringe, comprising: an outer casing (12) which encloses a drive assembly (32) and a syringe carrier (26) configured to hold a barrel (20) of the syringe, the syringe carrier (26) being forward of the drive assembly (32) and having a stowed position and a delivery position; an interlock (54) which extends between the syringe carrier (26) and a syringe carrier housing (58) which at least partially surrounds the syringe carrier (26), the interlock (54) preventing the forward motion of the syringe carrier (26) under the influence of an insertion actuator (48) whilst in the stowed position; wherein the drive assembly (32) comprises the insertion actuator (48) for inserting a needle (14) of the syringe into an injection site and a delivery actuator (38) for driving a plunger (30) into a barrel (20) of the syringe which contains a substance for injection; and, wherein the syringe carrier (26) comprises an interlock release mechanism (56) which is configured to release the interlock (54) such that the insertion actuator (48) drives the syringe carrier (26) forward.