Until the end of September 2020, Audi dealers are providing two years Audi warranty, two years roadside assistance, two years key cover and up to two years MoT protection with all 1-8 year old cars bought (Approved used Audi latest offers | Audi UK).
An extra is that they also give two free services if you take the car on a PCP contract. I tried this and was able to finance only 10% of the car cost over 12 months to get the service offer; that's 90 of loan interest for two Audi main dealer services. A cheap deal.