Unfortunately you need 2 years’ continuous service to be eligible for constructive dismissal. Similarly, you need 2 years to be protected against unfair dismissal. This effectively means that the employer can dismiss you or force you to resign for more or less any reason, without you having the ability to challenge them.
The only relevant exception is if you had made a protected disclosure and were treated detrimentally as a result, including being dismissed. However for s disclosure to be protected under law it must be for the following:
u A criminal offence
u The breach of a legal obligation
u A miscarriage of justice
u A danger to the health and safety of any individual
u Damage to the environment
u Deliberate attempt to conceal any of the above.
However, I do not see any evidence of this being the case here. Their methods are not illegal, they probably do not conform to what you see as good practice but that does not make it a protected disclosure.
There is nothing stopping you from resigning, it is just you cannot make a claim against them if you do.
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