A fuel injector for a gas turbine engine comprising: a) an injector body having a feed arm with a nozzle body connected thereto; b) a fuel conduit fluidly connecting a fuel inlet portion of the feed arm to a fuel circuit in the nozzle body to form a fuel path through the injector body; c) an outer feed arm wall outboard of the fuel conduit; d) a prefilmer within the nozzle body operatively connected to the fuel conduit of the feed arm to define a portion of the fuel circuit in the nozzle body, wherein the fuel conduit of the feed arm and the prefilmer of the nozzle body form portions of an interior wall of the injector body; e) an outer nozzle body wall outboard of the prefilmer, wherein the outer nozzle body wall and outer feed arm wall form portions of an exterior wall of the injector body; f) a main insulative gap defined between the interior and exterior walls of the injector body to thermally insulate the fuel path of the injector body from ambient conditions; h) a fuel swirler disposed radially inward of the prefilmer with a prefilming chamber defined between the fuel swirler and the prefilmer; characterised by: i) an inner air swirler disposed radially inward of the fuel swirler with an inner insulative gap defined between the inner air swirler and the fuel swirler, wherein the inner insulative gap is in fluid communication with the main insulative gap of the injector body; and j) an annular flexure beam disposed in the inner insulative gap between the fuel swirler and the inner air swirler, wherein the annular flexure beam is joined at a first end to the fuel swirler and is joined at a second end to the inner air swirler. a) an injector body having a feed arm with a nozzle body connected thereto; b) a fuel conduit fluidly connecting a fuel inlet portion of the feed arm to a fuel circuit in the nozzle body to form a fuel path through the injector body; c) an outer feed arm wall outboard of the fuel conduit; d) a prefilmer within the nozzle body operatively connected to the fuel conduit of the feed arm to define a portion of the fuel circuit in the nozzle body, wherein the fuel conduit of the feed arm and the prefilmer of the nozzle body form portions of an interior wall of the injector body; e) an outer nozzle body wall outboard of the prefilmer, wherein the outer nozzle body wall and outer feed arm wall form portions of an exterior wall of the injector body; f) a main insulative gap defined between the interior and exterior walls of the injector body to thermally insulate the fuel path of the injector body from ambient conditions; h) a fuel swirler disposed radially inward of the prefilmer with a prefilming chamber defined between the fuel swirler and the prefilmer; i) an inner air swirler disposed radially inward of the fuel swirler with an inner insulative gap defined between the inner air swirler and the fuel swirler, wherein the inner insulative gap is in fluid communication with the main insulative gap of the injector body; and j) an annular flexure beam disposed in the inner insulative gap between the fuel swirler and the inner air swirler, wherein the annular flexure beam is joined at a first end to the fuel swirler and is joined at a second end to the inner air swirler.