The No. 4 Mk. II* (pronounced: number four, mark two, star) was a further simplified version, with the socket and blade two separate forgings. This lowered costs and allowed manufacture by subcontractors. This also disbursed production, mitigating the risk of production being interrupted by bombing. Two-piece construction gives the No. 4 Mk. II* its characteristic stepped join between blade and socket.

Four firms produced the No. 4 Mk. II*, all in the UK: Prince-Smith & Stells, Howard & Bullough, Lewisham Engineering, and the Baird Manufacturing Co. 1.4 million No. 4 Mk. II* bayonets were produced, over a million of which were produced by Prince-Smith. The other makers were much less prolific.

This particualr example has very faint markings, common with the PSS production