I was made redundant in December as a result of losing a client due to covid and offered a month's salary tax free in exchange for not bringing any action against my company (global business).
I've worked in my role just over a year and during that time was subjected to a campaign of bullying from my direct manager (head of our office). I complained about them multiple times, I have around 10 emails to this effect, including proof of a formal grievance I raised with HR. Nothing was ever done to solve the issue, despite 5 members of my team leaving in the last 6 months due to their behaviour and 3 members taking mental health-related leave (all work anxiety).
I have a solicitor as a condition of signing my redundancy paperwork and we've gone back to my employer to request a bigger settlement due to the above, outlining the timeline of bullying and abuse which I've pulled together from emails. I have no prior redundancy experience and feel I am being totally shafted to be made to leave when my boss is still in the business, despite multiple claims against him (I know they'd had a written warning about the behavior when I first arrived on the team).
Does anyone with more experience than me at this know how likely it would be that I'd be able to negotiate my redundancy package? On one hand I'd like to move forward from what has been an incredibly toxic year but I don't want my ex-employer to get away with enabling such an awful situation.