Right guys.. took the Saph out for a Saturday night rip up in London and broke down on the way home

Car died. put ignition on and everything electric is ticking like mad.

Can hear dizzy, coil, fuel pump, and injectors all ticking and pumping erratically on ignition.

Disconnected each one by one but non effected the other.
Tried to strengthen the earth with a jump lead from battery to body but no difference.
Only way to stop it all is by disconnecting the ecu.
Had a look inside ecu and appears fine. also looked at fuses and relays and nothing frazzled.

Just wanted to seek some advice before i start chasing my tail again with this car

Thanks.