I use this to check if a vehicle is taxed and MOT'd, free of charge
https://www.getvehiclesmart.com/vehicle-smart-check.jsp
Baldric, you can't use askMID willy nilly. On the link you provided:
I am entitled to the insurance information about the vehicle detailed above for one or more of the following reasons: It is either registered/ owned/ insured by me or my employer; I am permitted to drive it; I am an Insurance Broker or agent and acting on behalf of my client.
I understand it is an offence to wrongfully obtain information of this nature without any of the above reasonable causes. If I fail to provide true reasons for acquiring this information I may be committing an offence of unlawfully obtaining data contrary to section 170 of the Data Protection Act 2018. I declare that the information provided will not be used for any purposes unrelated to this enquiry.