I had a situation a few years back - a company issued a summons in Nottingham County Court for some money which I disputed and filed a defence which was acknowledged by the court in a transfer of proceedings notice to my local court in Doncaster. Some twerp then registered a judgment which apparently appeared in the London Gazette - I then had several letters from Debt Management Companies offering their services and this was the first I knew, when I asked, of the judgment.(posted 7869 days ago)It ended up with the court paying me £200 compensation and a correction notice in the Gazette and to all Credit Ref Agencies.
It is true that these "ambulance chasers" scan court lists and papers and suchlike in the search for likely candidates for their services.