SSP is a set amount of sic pay which you must receive if you are off sick. It is defined by the Government not by the employer. Whilst deductions can be made from it, that should only cover deductions which are required and authorised under contract or to which the employee has agreed.
I do not see why your employer should be deducting the 45 min breaks from your SSP – not unless they have already paid you for that time, you have not been there to work it and they are now clawing it back. If they have not paid you for it separately, for example through your salary in advance, then they should not be deducting it from your SSP
Also it is not advisable to make such deductions, even if authorised, from SSP, as this could breach the implied duty of trust and confidence which exists between the employer and employee, if an employee is receiving little or no money while sick. Employers should wait to make the deductions until the employee returns to full pay or, if they leave employment, from their final salary payment.
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