NHS Fees

Hello,

I applied for and received a Tier 1 Exceptional Talent visa (promise route) in early February (prior to the switch to the Global Talent route). Before my Tier 1 visa I was on a Tier 2 visa. I had paid for two full years of NHS fees for my Tier 2 visa. When I applied for my Tier 1 visa I paid for 5 years of NHS fees - so I ended up paying for almost one full year (minus one month) twice. Someone mentioned it may be possible to get reimbursed for this paying double? If so, do you know how I might try? Or is the money just lost. Thank you!