This sort of thing happened quite a lot as the incompetent clowns who manage the Driver licensing office accidentally destroyed the driving test 'pass' certificates of 10s of 1000s of drivers and have since refused point blank to accept any evidence of such victims ever having held such a licence. Their attitude is that if you are affected by this, well, you'll just have to take your test again, won't you!
Britain must surely have the most utterly incompetent civil service in the world!
When I applied for my British old age pension, I discovered that they had "lost" around 10 years of my contributions! When I protested they asked me to send them the wage slips of the periods in question - like I am going have keep wage slips from the 1960s and 1970s!
Their incompetence has cost me 100s of Euros a month as if I had had the extra years contributions I would have been entitled to a larger pension in Luxembourg where I live! I think god that I have a decent Luxembourg state pension of £20,000 a year rather than just the miserable pittance the UK DWP pay me!