Is the Thai restaurant still there? When I lived in Whitstable I popped in to ask where they got their ingredients. They asked me what I needed and a few minutes later came out with a package of lemon grass, galangal and Thai basil.
If you mean The Orchid on Middle Wall, then yes it is (or was last summer) - although I've never been in there.
Formerly the Wall Tavern. After going through several changes of [dodgy] ownership and attempts at rebranding, it is now closed and boarded up. Suspect it is a prime site for redevelopment.
There used to be a good Thai restaurant (I forget the name) on the high street, next door to the Playhouse, which I suspect is more likely to be the one PaulF is thinking of. The owners shipped out and opened an 'oriental grocers' in Canterbury called Thais R Us - probably inspired by people constantly coming in asking where to get the ingredients.
The former restaurant is now the Twelve Taps hipster ale & gin emporium (I took my dad in there once - he did a good job of pretending to enjoy it but heavily hinted that he didn't ever want to return). Before it was the Thai restaurant, it was a trad English restaurant called Peg's Pantry.
Come back same time tomorrow for another instalment of Whitstable Eateries Through The Ages. In the meantime, back to your normal Rant service...