Dual Citizenship and owner of companies in each country

Hi There, I am British and Bulgarian citizen. I am planning to open a limited company in UK and Bulgaria and have houses in both countries. Due to my business I travel a lot between two countries. I am registered as residential in both countries as well. My question is that as I have both citizenships, and potentially will have companies in both countries and also reside in both countries, and finally as I will pay taxes in both countries locally, do I need to inform Both country authorities for the other country incomes? Shall I declare my income from other country to the HMRC as well?

Hi,
A company which is resident in the UK is normally subject to corporation tax on the whole of its chargeable profits on a worldwide basis (subject to relief for double taxation).
A company which is not resident in the UK is only liable to corporation tax if it carries on a trade in the UK through a permanent establishment.
A non-resident company may also be liable to UK income tax on non-trading income.
You can find HMRC guidance on company residence at:
INTM120030
Thankyou