Off topic
(may be selling ice to Raindeer or someone covered this better anyway..)
You have a right to raise a grievance on your manager engaging in Active monitoring of your private life via the personal data of you your partner /child and wider community contained (its not just your data) in your SM.
You dont have to but it is beneficial to collect the evidence if someone decides to kick off.
You have a right to a private life and just as no job should be peeking in your gym window because you once said you go there you manager should not be using similar personal data aquired during (due to) work to collect or process other special class data.
Read your HR policy very carefully
Firstly Misconduct "out of work" then Data Protection and then SM and any Public Service Duty type policy.
Take care to understand what is covered what is [(edit) not ] excluded as personal life and what is silent.
Then do a data wipe of links between you (personal and professional) and the job this way if a staff member has collected data you can date when it was removed.
Start by doing data searches in the SM and remove any link which pops
Search your name /Job, Work. Career... etc
The names of people you work(ed) with and in your case expos or projects
And clear the data
Run searches in google Name /Job Name/SM/keyword etc to see if anything pops you can use the right to be forgotten law to wipe any direct links
Then split work and home by removing access.
Block current staff on SM that you use to express a political opinion (° even if you are friends°).
Change you name slightly
VoleForceOne
VolelyForceOne
VolssFOne
Etc.
And as there was multiple email data leek leeks look for you email and if it links you to SM. You may have linked your personal email address to your work address if you ever emailed yourself.
So you should no longer pop up in a general web search.
° Even if you are friends tell friends in advance but ask them not to speak about it as you dont want drama with staff who "invited themselves" into your personal life
If asked by a non-friend on the block explain that its your personal life and you are being proactive by acting on the email and will not enter into a conversation and note who and when and what was said.
Professional digital footprint is again a change of name V.One to break the link.
Think about removing any work phone number / email address if they are not needed.
Then if a TRA in work or your manager is complaining about your PC of belief by cyberstalking you the Job has to first justify how the staffer got your personal data why they were using it (to collect and process a OC view) and how that SM account links you and the Job. The Staffer going around processing your Personal Data by telling others in the job is not you "bring the Job into disrepute" so staff as insiders would not have known your lawful PC belief/political view if not for the Staffer linking your personal data which they should not have to you. That is bullying and harrassment.
And there is nothing in your public account which can be used by a stranger to directly (your profile pic is a data point link) link you to the Job. Even then once you have kept within the no personal abuse generic slur etc of the Jobs Communication Policy no action can be taken.