MG ZS 180 still having issues

[adio]

Hello Peoples i have an mg zs 180 and i have had issues for a while having had my engine hydrolocked i have since replaced the engine and the wiring loom and still no start since then i have replaced the ecu bcu key fob etc all bought together and still no start and im now lost as to what to do if anyone has any ideas it would be greatly appreciated as which direction to go

thanks adio