Ok so plate cant be over 1800kg due to tyres & axle.Got the tyres wrong 900kg load index 104
It needs a MLPM weight displayed on it.
From memory it needs a distinguishing ID re maker & number.
Your initials & 001 would do.
At 20 years old it pre dates IVA testing.
If no plate is found they use the tyre load index / lowest limit on a part to define MLPM.
As you have BE then the plate weight is not an issue re vehicle or licence limits only for actually over loading it.