After a couple of weeks checking things over and having to contact Omex, thanks to Omex for pointing out my wiring mistake, I managed to get the ECU to communicate with the software on the laptop. This bought up a range of readings and indicated the sensors were registering.
After a couple of turns of the key to allow the fuel pump to prime and send fuel to the engine I turned the Key to the start position.
The result can be seen below.
On with the rest of the build