Long story short, I ran an online business with my ex... he owes me some money from it (client paid him £1400 for a job we both worked on, which should have been split 50/50 - so £700 - not a fortune, but not nothing). After I pressed for my half of the payment and said I would take him to the Small Claims Court, he is now threatening to 'ruin me' and claims he will counter-sue over some made-up nonsense (allegedly cheating him out of money down the years etc. - nonsense, but would cost more defending myself against it then the initial sum. He has money and he's so petty I wouldn't put it past him to waste money instructing a lawyer just to p me off)
Anyway, does threatening an obivously vexatious lawsuit count as a threat under law? From what I've read, this mostly applies to threats of violence, abuse etc, (as per Public Order Act 1986) but could threatening my financial well-being also count under the law? - causing me distress, worry etc?