His being a live in housekeeper for the place up north is totally believable, given there is close to zero personal objects in view, compared to the London tat cave. Frenchy's "job" is rarely referred to, just the occasional recycled story of him banging a keyboard to the Sex and the City theme, then shutting his laptop at midday. Not even a whisper of returning to any office - which is pretty weird at this point, almost all companies have switched to hybrid working.
But how does that explain the holiday flat in Cyprus?! And also if the partner is that wealthy, why on earth is he letting Frenchy cool his heels in one of the absolute roughest parts of SE London? Nothing makes sense