Update:
Bouncing on the bonnet finally worked. That said I'm pretty sure the latch or the cable is fubarred.
On the VSC front, I've tried all the tricks, bridging the pins, disconnecting the battery and opening/closing the fuel cap. VSC stays lit and re-reading throws up 1345 and only 1345.
Don't really know what to do now, it would be a criminal waste to scrap a perfectly good car which has had a lot of preventative work done (inc new wheels, SS exhaust system & cats , timing chain, water pump etc etc etc.
ETA.
The reading:
Car Scanner ELM OBD2
DTC report
Selected brand: Lexus
============1==============
P1345
Raw code: 1345
ECU: 10
Status: Confirmed
OBDII: SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation
Lexus: VVT Sensor / Camshaft Position Sensor Circuit Malfunction Bank 1
============2==============
P1345
Raw code: 1345
ECU: 10
Status: Confirmed
OBDII: SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation
Lexus: VVT Sensor / Camshaft Position Sensor Circuit Malfunction Bank 1