Maxsteam,
Sorry, I meant that if he was based in Hong Kong, then HSBC could assist with opening an acount for him in the UK or any other country.
HSBC International offered me this option before I left the UK earlier this year as I intended to live part of the year in the USA and part of the year in Asia. HSBC International don't actually hold the accounts for you, they are still held and operated in the country that you wish to use them. In this case Paul could possibly get an account opened in the UK and it would be covered by the UK FSCS.
When HSBC International told me about this, it was dependent on being a HSBC Premier customer too, which I think this means holding a combined balance across your HSBC accounts. I didn' actually take this option myself at the time as I managed to get an account opened in the USA with Citibank and wasn't enthralled with opening an account in Asia where the guarantee was only around £3000 if the bank failed.
I can't be sure that this will be possible to get the UK account but a phone call or visit to a HSBC branch in Hong Kong would help determine if it can be done.