My local Forbidden Planet International branch in Hanley is much like all the other FPIs mentioned in this thread, now only carrying comics as an afterthought. The Hanley FPI used to be a much smaller store named Fantasy World/Another World, yet ironically carried far many more new and old comics before the move, when they were displaced for the usual array of action-figures and console games. They're also appalling at stocking some comics, the story being told that for some titles they only order in a handful of issues that get sold the same day. Common sense would suggest they simply order more issues in those cases, but if they operate the same way they handled my standing orders (i.e. they couldn't really care one way or the other), then I can see why they seriously downplay the comics side of the business.
Consequently, I hardly visit the Hanley store at all these days; which is probably just as well considering that FPI chain (rather than the confusingly-named Forbidden Planet) was recently hit by massive credit card fraud, mostly restricted to online transactions but also the occasional in-store hit as well. As I've come to expect from FPI, they barely acknowledged this massive fraud, and the only statements you'll find online come from Forbidden Planet (NOT International), who simply state it's not their chain of stores that are affected!
Anyway, not too far away from Hanley, there used to be a great second-hand bookstore simply called The Bookshop in Hartshill, Stoke, that used to carry hoards of old comics and books. Many's the time I spent in there getting some cheap silver and bronze age comics, Marvel and DC, UK and US! It wasn't to last however, as apparently a mega-collector eyed up the store's probably-underpiced stock and bought the lot, and with his store effectively gutted the owner closed up not too long afterwards, around 1995.
Slightly further afield, Manchester's got FPI (formerly Odyssey 7) and Travelling Man now, but they used to have a few other haunts that stocked old comics, most prominently the small chain of Empire Exchange stores, of which only one poorly-stocked store now remains. There used to be a small one of these on the corner from the BBC, but the story I heard was that the owner apparently closed up and sold all his back issues to the local FPI! Typically, FPI then allowed those issues to be sold, and then simply got rid of the back issue bins altogether; I think this must be a region-wide FPI thing, since my local branch doesn't carry back issues either. Manchester also has a Travelling Man there which is far more focussed on comics than FPI, and consequently much better stocked. In fact, back when the Manchester FPI was Odyssey 7, they actually had a second store located in the heart of the student campus on Oxford Road, but it closed up not long before I started studying there!
Actually, one Manchester shop in particular which has also long since closed down seemed to me more than a bit on the dodgy side. It was located behind the Arndale Centre and was in the basement of one of the buildings (they also had a prominent Batman picture on the side of the exterior wall). Every time I went in there they had a small guy standing somewhat nervously in the corner of the store. I never found out for sure, but I think he was the store's 'security'! The owner (who as I recall bore a passing resemblance to Corrie's Dennis Stringer!) could also occasionally be found making out with his girlfriend in the back of the store, which coincidentally or not, also housed a prolific collection of 'jazz mags'!
There also used to be bohemian shopping centre opposite called The Coliseum (not too dissimilar to the still-standing Affleck's Palace) that housed a couple of comic shops as well. One of them was called Moonwalk and it specialized in Star Wars memorabilia as well as comics, and the other one was mainly an action figure store with the occasional silver age comic to be found. In fact the guy who ran the action-figure store was one of the organizers of a local comics/science-fiction convention at one point as well. The Coliseum closed up in 2002, but both guys had moved out by then. The action-figure store moved to the Arndale Centre market, but he got rid of the comics, and the store closed up a couple of years ago. Moonwalk moved to Portland Street, not too far from FPI, but likewise closed up several years ago.
For the briefest of times there was also a place called The Last Picture Show in the Trafford Centre, but it was located in the market section which was gutted and replaced by a John Lewis store, because you can never have enough clothes shops in just the one shopping centre!
It's interesting, looking back on when there were more comic stores open, and when the existing stores actually focussed on comics; it really puts into perspective the boom and bust of the 80s/90s speculators' market.