As a UK resident, you can open an ISA account even if you move abroad at some point during the financial year.
You must notify us as soon as you stop being a UK resident.
You will be able to make payments into your ISA until the end of the financial year. After the tax year is over you can keep the ISA open and you will continue to enjoy UK tax relief on the account. You will also still be able to transfer your ISA, but not deposit new funds.
You will be able to resume funding the ISA when you become a UK resident again.