The vehicle details for GYS 523X are:

Date of Liability 01 12 1996
Date of First Registration 22 06 1982
Year of Manufacture 1982
Cylinder Capacity (cc) 1597CC
CO2 Emissions Not Available
Fuel Type Petrol
Export Marker Not Applicable
Vehicle Status Unlicensed Vehicle
Colour GREY

Vehicle Type Approval
This vehicle can be licensed at a DVLA Local Office without the V5C Registration Certificate
Vehicle Excise Duty Rate for vehicle
6 Months Rate £112.75
12 Months Rate £205.00

Its not been taxed since 1996 so probally scraped or left to rot somewhere.