If you're importing a bike that was originally built for the UK market, it should not be a huge problem - other machines will have some mods to be done - some big, some small. It involves things like the headlight, turn signals, colours of the lenses etc.
There is a conformity document (a checklist) of features and (believe it or not) emissions controls that the machine must conform to. You will have to contact the Hong Kong Department Of Transport for the list.
If it doesn't conform, it will be out of here on the first boat pretty smartly.
In addition, there will be a first registrations tax to pay, for a new bike it's 110% of the new (dealer) price, which decreases on a pro-rata basis for a number of years. If it's a vintage bike then there is still a residual tax to pay.
After import, the bike will have to be road-worthied and emissions tested by the HKDOT, at your expense.
It's a time consuming, frustrating and possibly expensive business - be warned.
If you're taking a job with CX in HKG I would presume you're starting as a S/O. If that's the case, you would be advised to have your nose in the books for the first few months, not messing about with the HKDOT. Slack off at your own peril.
Finally - Hong Kong is not bike friendly. Drivers are agressive and inconsiderate, and often make unsignalled turns without checking blind spots. There is not much designated bike parking, so you're always jockying for what little space there is. Hong Kong experiences hot, humid weather for a large part of the year - leathers (if you don't wear them, you're asking for nasty road rash) are a must but turn into science experiments when the weather turns. Your bonedome will need regular disassembly and washing or your best friends will run from you. Strange creatures will start dropping from your hair. Every un-oiled part of your pride and joy will rust.
Have fun - it still beats a car!