The biennial record which the CAA hold might be inaccurate. My paper record, in my licence folder, is complete, all revalidations by experience.
Enquiries to the CAA with respect to my English proficiency lead to the information that some years revalidations were not on record.
If I had crashed, and the licence was burned or lost at sea, their records would have shown I was neither legal nor current.
The examiner who signed my form that year would not be known to the CAA, and might not see the accident report, so wouldn't respond.