A diverter assembly (502) used with a manifold of an oil or gas well is described. The diverter assembly (502) comprises a housing (504) having an internal passage (508) having first and second ports. The manifold has a choke body (500), which, in a first configuration, forms part of a first flowpath (10, 500, 530) to and from a bore of the manifold. The first port of the internal passage is connected to the choke body (500) and the second port of the internal passage is connected to a conduit to provide an alternative flowpath (10, 500, 520, 544) to/from a bore of the manifold via the diverter assembly (502). A method of diverting fluids is also described.