When you leave the UK you should complete form P85.
On this form you will confirm you are continuing to work for a UK employer and we will check to see if we are able to issue a code of NT (No Tax) to your employer.
You will have to contact your bank to ask them if you will be able to keep your UK bank account if living abroad.
Regarding your settled status you should contact the Home Office on 020 7035 4745 or by email firstname.lastname@example.org.
Their telephone lines are open Monday to Friday 0900am to 500pm.
You should take the Statutory Residence Test on the Gov.UK RDR3: Statutory Residence Test (SRT) notes
You will need to contact the National Insurance helpline on 0300 200 3500 regarding both your national insurance query and your State Pension one.
Get your Income Tax right if you're leaving the UK (P85)