Thanks for the response and the days in the UK
As you have spent more than 90 days each ttax year, you will be treated as resident in the UK for all years.
This means if you are a UK citizen, then you remian liable to tax on your worldwide income, and should have advised HMRC of your income position each year, but also advised them of the tax suffered in Hong Kong, which would have been treated as a reduction against any UK tax due.
Your best approach, is make arrangements to meet up with HMRC as they have requsted, taking along all the details of income and expenditure, and also the tax suffered through the Hong Kong tax system. (So any official documents pertaining to this)
HMRC are interested what you drew as income as an individual, rather than the company position, but take all papers along for them to see what income has been drawn over the relevent tax years)
And arranmgments that do not allow the double taxation position due to the traty arramgements agreed from June 2010 - effective from April 2011, still allow the tax suffered as an "expense" from the UK tax position
So for all yaers, you either have the benefit of actual double taxation , or the bebenfir of being permitted a credit (through the form of an expense) of the tax suffered.
So unless the tax due under the UK tax regime is more than the tax suffered through the Hong Kong syetem, will you be in a position that you owe HMRC tax, and if in fact the UK tax due is less than the tax suffered already, then you will owe nothing, and only have to address the fact that tax returns should have been filed (main tax return, foreign income page and a residency page) and this may leave you with a few penalties to pay.
And for the last tax year when you only spend 90 days in the UK, that tax year, is just a repoerting excercise, as oyu are under the permitted 91 days.
If tax is owed, then there will also be penalties for the late payment of tax.
Plus the fact you are entitled to UK personal allowances for relevent years.
It would be prudent that you do seek support from a local UK accountant familar with both double taxation, residency and foreign income, as I feel you would find this invaluable. But at face value your position does appear to be more favourable to you, rather than HMRC.