If you have a Morrison’s nearby, Elvis, have a look in. Of the big supermarkets they seem to do the best range of bottled “real ales”. There are so many to choose from and some of those that have been mentioned meet my taste. You’ll find some you like but it takes YEARS of practice to find the one you like best. I‘m still having a whale of a time finding the right one!!
Among my recommendations:
Any of the Adnams (Suffolk brewery) ales are very good, especially Lighthouse and Broadside.
Everard’s Tiger (Leicester)
The range of Hall & Woodhouse “Badger“ bitters are great (Dorset)
Harvey’s, (Sussex)
Hook Norton (Oxfordshire) Old Hookey is a lighter ale.
Hornbeam (Hampshire) HSB (I call it Hextra Strong Bitter but I think it’s Hornbeam Special Brew)
Shepherd Neame (Kent) Spitfire and Bishps Finger
These are just a few. There are far too many that I like to mention here. I won’t comment on John Smith’s !!!!
A few tips:
DO NOT keep bottled ales in the fridge. It knocks the life out of them and in any case, as has been said, they taste better at room temperature or, ideally, cellar temperature. Only mass produced lager has to be served freezing cold. (If it was served at cellar temperature or above drinkers would be able to taste it and they’d never sell any).
If you get a chance visit a pub which serves decent real ale.
If you really want the chance to sample a wide range visit a local beer festival or, if you can, the Great British Beer Festival in London in August.
Above all, try as many as you can because, as I'm sure you've gathered, the variety is so great
Happy Drinking !!!