Source links for the factual statements about diesel particulate filters and MOT rules.
GOV.UK: Diesel particulate filters — guidance note ↗
GOV.UK: MOT inspection manual, section 8 (Nuisance) ↗
GOV.UK: Catalytic converters and diesel particulate filters ↗
Official sources describe general legal and emissions requirements, and do not specifically recommend or endorse Prestige DPF Clean.
The company logo, MET CLEAN S photograph and cleaning-process video were supplied for this project. Five process stills were extracted from that video. The automotive DPF, mechanic, workshop-vans and scenic-road images are illustrations, not documentary photographs of Prestige.
