Lovely! How much space does a little quail-family take up? Chickens would probably be pushing things in our garden, but quail... Hmm...
You can keep half a dozen in an old rabbit hutch, easily. And such things are often to be procured on freecycle. I'm building something a tad more elaborate, but along the same lines.
They'll live quite happily in that sort of space all their lives. Unlike chooks, they don't need a run of any kind. They're ground-dwelling game birds and will nest and lay pretty much anywhere. They don't even need perches in their next box like chickens do.
if you were to see just how little space the industrial battery birds get, you'd be shocked. A rabbit hutch is luxury!
They eat most stuff (wild bird food from Wilcos if you can't get layers' pellets or other chicken food). They will drink quite happily from a rabbit-bottle, although it's best to get a gravity-feeder if you don't want them to poo/lay/dustbath in their food.
They're cheap as chips to keep!