How many is too many?

Don't worry, you don't need to answer because we all know when you posted the above you had not got a clue as to the figures one way or the other. Any amount of retrospective Googling won't change that.

I'm doing some research on this - can you point me in the direction of some examples?

Do your own research.

He'd better because yours usually consists of wiki quotes or personal fantasies

Stop making things up hey.

Maybe we can see this research in due course.....

There are actually official stats available online frmo HM Gov as to the level of successful claims at employment tribunals, just type in a search term and you'll find them. Of course the word "successful" is a bit ambiguous because any outcome is successful to one party, but still, the official stats don't show " too many speculative and vexatious claims" for if they did then a huge number of claims would be thrown out of the system rather than reaching an agreement between parties or a binding decision.