The only person I have close to him in age is the one-year-younger Siobhan Hanrahan, whom he might've known during school; he would know what had happened not too long after her debut, as well, as it wasn't precisely kept secret that she was courted by and subsequently married to a vampire, haha.

As for work acquaintanceships, Orpheus Newberry is the closest connection I've got. I don't know what would connect them specifically besides "they work in the Ministry in very different departments" but...well, it's what there is in my roster. That being said, Orpheus is part of his own outside-of-work plot that would probably make Philip very unhappy!