If as director and sole shareholder of a limited company (in the UK) I want to purchase (or possibly even lease) a car for my use, will I be taxed as an employee for having the use of the vehicle and if so, how would that be calculated?
This subject is covered extensively here: https://candmservices.co.uk/tax-and-the-company-car/
Note the particular quote:
Remember that as a company director, a leased car will still be reportable and taxable as a benefit in kind.
This means you will need to calculate the corporation tax saved on the lease costs against your personal tax bill and employers national insurance on the P11D.