Hello my name is ***** ***** I am happy to help you today. How long have you worked there in total?
For the original employer 14 years
It is unlawful under TUPE to change terms and conditions, so if they do this and you suffer a detriment, by not being backpaid then you can bring a claim in the employment tribunal who will give a declaration that the change is void. In the first instance I would suggest you raise a grievance to say that this is void under the TUPE regulations and ask them to confirm that they will not breach your contract in this way.
Hopefully this will be enough for them to change their mind or at least to clarify the point about back pay.
If not then you can consider raising a claim.
You would first have to engage ACAS early claim conciliation. You will find information about this at http://www.acas.org.uk/earlyconciliation
If you have any further questions please do ask. If I have answered your question I would be grateful if you would take the time to rate my answer. Thank you and all the best.
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