Hello and thank you for your question, which I will be happy to assist you with. Please let me know if you have actually been paid yet?

When you transfer under TUPE you have the right to keep your old terms and conditions and the new employer would simply 'step into the shoes' of the old one. So if you were contractually entitled to be paid on a specific date then you can expect your new employer to adhere top this. However, delays may occur, especially following a transfer and as long as this was a one off incident then it would not be seen as a major issue, especially as the delay was only a couple of days. Of course if that resulted in any fines for delayed payments or going overdrawn then the employer should consider reimbursing you. As to your duties then again you can expect them to be in accordance with your existing contract. If your employer is now preventing you from exercising your normal duties and there is no clear explanation for that, you may wish to take this up further with them, such as by raising a formal grievance

if they fail to pay you on time then again that is a matter than needs to be pursued internally through a grievance. If it goes into liquidation then you would be made redundant and assuming you have at least 2 years continuous service you would be entitled to a redundancy payment

if the old package was contractual then it would still apply

if that was the case it is likely it is contractual and you can expect the new company to honour it