Done some more to it last night and today. Wired up the coil pack and mounted it more securely, I’ve also fitted the injector clips that were missing (thanks Fastorq!) and mounted and wired up the fuel pump.
Also sorted the cable between ECU and the relay board.
It now makes more noises (“click buzzzzzz click”) as the pump tries to prime!
I think I’m getting closer to starting it, but my list of little jobs to do seems to be getting longer the more I cross off!