Visa reimbursement

Hi, My previous employer paid for my visa expenses. When leaving the job, they made me reimburse them the full amount. My current employer accepted to reimburse me this full amount on a pre-tax basis - I was discounted both taxes and NI according to the payroll department. This means that on a net-basis I have received less than the actual amount I had to reimburse my previous job for the costing of my visa expenses to perform my job. Questions: 1) Can I get this tax and national insurance reimbursed? This was not an income, but in my spayslip it is shown as a sign on bonus. 2) given this was for year 2024-25, would I have to wait until April 2026, or can I ask my tax code to be already adjusted? I would need the tax refund as soon as possible, in order to pay my previous employer.

Hi,
Please refer to:
UK visa sponsorship for employers
You will need to wait until after the end of the tax year if you are entitled.
Thank you.