Some basic info that is widely available; - Tag Heuer is not TAG Group. - TAG (Techniques d'Avant Garde) is Mansour Ojjeh's company. - He is a long time shareholder of McLaren. - Main businesses are corporate investments and aviation services. - Bought Heuer in the 80s and turned the company around under the new name of Tag Heuer. Sold it in 2000(?) to Louis Vuitton. - Funded (but critically has no role in) the development of a Porsche engine for McLaren. - Tag Heuer is not a new engine manufacturer, this is just 'badge engineering', as is the proposed Aston Martin (Mercedes) deal with SFI. - Ojjeh/TAG is rumoured to be looking to sell his shares in McLaren. What that might or might not lead to is anyone's guess.