It's fair enough to spend more in colectif than on petrol, you live in London so probably can't drive far anyway!
I used to love colectif, lady luck rules, sailor jerry, little miss sew sew, god I was an eBay rockerbilly/ kitch a holic. I was forced into cloning rehab (I had another baby) and it became unsustainable. I even had a 1967 vauxhall viva which had bench seats and finned lights. It got sold to fund my extended mat leave!
I think you know how much wow factor you have got and ain't no shame in that game sista! work it!