Where to buy vinyl records, not Amazon

[bunchofkeys]

Pretty much as the title reads.
Looking to build up a small collection of records, for the old (must be about 40 years old now) technics turntable that I've picked up from my parents attic.
It's far from high end, but suits my needs for now, as a light listener (belt and cartridge have been replaced).

I'm growing ever tired of buying things from Amazon, so ideally i would like start buying from smaller companies, or even go visit a store to hand pick (impulse buy) records, both old and new.

Could anyone recommend places both online and actual stores?
I'm in Kent, so could travel on the highspeed train into London, if there are places that offer a good selection.

[bunchofkeys]

Blimey that's a great list for starters, thank you.

Ideally a day out to the record shop would be nice, so thank you for the suggestions. But it also seems that Discogs (Disco GS or Disc Ogs?) is the goto place too.

To answer the question, the model: Technics SL-B2