1. The Clapham omnibus has many passengers. The most venerable is the reasonable man, who was born during the reign of Victoria but remains in vigorous health. Amongst the other passengers are the right-thinking member of society, familiar from the law of defamation, the officious bystander, the reasonable parent, the reasonable landlord, and the fair-minded and informed observer, all of whom have had season tickets for many years.
2. The horse-drawn bus between Knightsbridge and Clapham, which Lord Bowen is thought to have had in mind, was real enough. But its most famous passenger, and the others I have mentioned, are legal fictions. They belong to an intellectual tradition of defining a legal standard by reference to a hypothetical person, which stretches back to the creation by Roman jurists of the figure of the bonus paterfamilias.

Healthcare at Home v The Common Services Agency [2014] UKSC 49, per Lord Reed, with whom Lords Mance, Kerr, Sumption and Hughes JJSC agreed.

Continuing in Lord Reed's admirable style (but definitely not as classy as him), the "nontoxic Tier 1 partner" is, unfortunately, a character in your imagination, not one who inhabits either the legal village of Indian jurisprudence, or the legal village of Indian commercial lawyers. We do not know him, therefore, for our purposes, he does not exist. Until he can be introduced, a season ticket for him cannot be created.