Which is the tenuous connection with Gopal’s Corner, a Malay rather than Thai place, serving rich curries with roti upstairs in Victoria Market Hall. If you haven’t been, VMH is a buzzing food court with about a dozen offerings from tacos to bao to burgers and it’s about 2 minutes walk from Victoria station. Frankly it’s an extremely useful place to know.
And although I haven’t tried everything, I reckon Gopal’s Corner is probably the best food there. The curries do the same thing as that green curry in Satun: dial up both fragrance and rich earthiness to max. The roti are homely and flaky and tear into papery chunks that sop up the spicy sauce perfectly. The meat in the curry is almost secondary, but soft and good.
It’s also cheap; a bowl of supper for a few quid. See you there.