Refundable health insurance Maturity Benefit

Before moved to UK, I got a Refundable health insurance in Hong Kong, which I paid monthly premium for 10 years (i.e. 120 times the monthly premium), I will get back 100 times the monthly premium. I did not claim for any medical benefit thru out the insured period. Now, I moved into UK and become UK Tax resident. When this policy matures, I will get back such Maturity Benefit . Do I subject to any tax on this ? As my net paid to insurance company is more than what I get back from insurance company when the policy is matured, In my understanding, no "Gain" is arose.

Hi,

This income is only taxable in Hong Kong and should not be declared to HMRC.

Thank you.