I lived in Southport, Lancashire, when I was a boy (Local Government re-organisation meant it became Merseyside at a later date, much to the chagrin of the locals) so I’m very familiar with this dish!
It’s a meaty stew-style dish with loads of full-flavoured juices emanating from the lamb and kidneys and it needs a wine robust enough to stand up to such full-on tastes and aromas but one that can also add to the whole experience.
It has to be red wineand as it’s Lamb based I’d go for a Rioja Crianza or perhaps a slightly fuller Ribera del Duero. That should to the trick!
There are a number of wines, grape varieties and wine styles that could match this dish I think. Navarra reds might be an answer but I sometimes find them a touch tannic – this would clash with the chilli making the dish doubly hot.
So I’ll consider the match by grape variety rather than area. I think a Syrah based wine or one made with Garnacha will do the trick. Perhaps at crianza level, but preferably a semi-crianza or even a joven (young wine) provided it is rich enough.
There are many areas in Spain where Garnacha is the preferred variety, DO Priorat would be super, though expensive. Syrah is becoming increasingly prevalent too, so there should be plenty of choice.