Here are some links to other websites that you may find useful:
https://comcar.co.uk/companycar/tax/select/
https://www.rac.co.uk/route-planner/
https://www.theaa.com/european-breakdown-cover/driving-in-europe
https://www.vehicleenquiry.service.gov.uk/
https://www.gov.uk/vehicle-tax
https://www.gov.uk/government/news/vehicle-tax-changes