I have a long term (2-year) type C business visa to the UK. From the website and other resources, it says that:
If you can prove you need to visit the UK regularly over a longer period, you can apply for a visa that lasts 1, 2, 5 or 10 years. You can stay for a maximum of 6 months on each visit.
This gives you unlimited entry into the UK during the visa’s validity - not to be confused with being allowed to stay for 1, 2, 5 or 10 years.
You are only allowed to stay in the UK for up to 180 days during each stay, unless the visa expires before the 180 days - as indicated by the ‘valid until’ date shown on the visit visa.
But when I contacted the customer support, the reply I got was:
With regards to your query, you can spend up to 6 months in any 12 month period in the UK. I hope this answers your query.
We strongly recommend not to book prepaid travel and accommodation before receiving the visa.
So I am confused about the "180 days during each stay" vs "180 days in 1 year of stay".
Could someone help me with that?