His position can't just go unless he quits or they want to face an employment tribunal.
Do you have a non-compete, does your company have any anti poaching agreement with this vendor you work with and have you spoken to a solicitor specialising in employment law?
Honestly you might get an initial e-mail giving brief advice from them for free too after they've seen your contract(s) etc.. and then you're perhaps talking about paying for a consultation or potentially getting them to write a few letters - for the sake or some free initial advice or couple of hundred or so for a quick meeting or perhaps maybe a grand if you need to get them more involved then it could be well worth it given her behaviour. You can get them to help negotiate your transfer if required etc..
The reference is important to secure too if she's getting emotional/personally offended/acting spiteful etc.. you might be able to get an agreement on the wording of any references she gives to future employers - especially if she's done anything that might otherwise constitute constructive dismissal etc...
There are solicitors out there who deal with this stuff literally all the time and who can give you bags of advice specific to your situation, whether any contracts are unfair, what your rights are re: your shareholdings, notice periods, gardening leave etc... what your employer can or can't do... it is a complete no brainer to talk to one given the potential costs if/when things go wrong with these sorts of things... and they can go very wrong to the tune of tens of thousands of pounds or more in either direct losses or loss of future earnings etc..etc..
I will be following up with the formal process with the vendor and then see what they have to offer so we all know where we stand, then all 3 parties can plan a handover if required in a professional manner.
Do you have a non-compete, does your company have any anti poaching agreement with this vendor you work with and have you spoken to a solicitor specialising in employment law?
Honestly you might get an initial e-mail giving brief advice from them for free too after they've seen your contract(s) etc.. and then you're perhaps talking about paying for a consultation or potentially getting them to write a few letters - for the sake or some free initial advice or couple of hundred or so for a quick meeting or perhaps maybe a grand if you need to get them more involved then it could be well worth it given her behaviour. You can get them to help negotiate your transfer if required etc..
The reference is important to secure too if she's getting emotional/personally offended/acting spiteful etc.. you might be able to get an agreement on the wording of any references she gives to future employers - especially if she's done anything that might otherwise constitute constructive dismissal etc...
There are solicitors out there who deal with this stuff literally all the time and who can give you bags of advice specific to your situation, whether any contracts are unfair, what your rights are re: your shareholdings, notice periods, gardening leave etc... what your employer can or can't do... it is a complete no brainer to talk to one given the potential costs if/when things go wrong with these sorts of things... and they can go very wrong to the tune of tens of thousands of pounds or more in either direct losses or loss of future earnings etc..etc..