Many thanks for your patience. Now that you have resigned your only option is to consider a claim for constructive dismissal in the Employment Tribunal. However, that is only possible if you have at least 2 years continuous service with your employer. Therefore, you need to be certain that you have at least 2 years with the company before you can consider taking it further.
if that is the case, then before a person can make a claim in the employment tribunal, they would be required to participate in mandatory early conciliation through the Advisory Conciliation and Arbitration Service (ACAS).
The purpose of this process is to allow ACAS to mediate between the claimant and respondent to agree on an out of court settlement in order to avoid the need for legal action in tribunal. The respondent does not have to engage in these discussions, or if they do and the talks are unsuccessful, the claimant will be issued with a certificate allowing them to make a claim.
However, if a settlement is reached, the claimant would agree not to proceed with the claim in return for the agreed financial settlement. Other terms can also be agreed as part of the settlement, such as an agreed reference.
The next steps you need to take in order to initiate the conciliation procedure are to contact ACAS, either online by filling in the following form: https://tell.acas.org.uk/find-a-solution-to-your-employment-dispute, or by phone on 0300(###) ###-####
If the conciliation process was not successful and you then wanted to make a formal claim in tribunal, you can do so here:
Hopefully this clarifies your position.