It says "Result sourced from Digital UK.", so yes. For some reason that one says Bilsdale too, even though it lists Belmont as an alternate. Shouldn't it expect you to have your aerial pointed to the transmitter with the most channels available?
I suppose it depends if you get your TV off a relay or if the site thinks you get your signal from a relay?
I'm deep in Sutton Coldfield's area but I know there is a transmitter/relay in Brierley Hill so I dug out the postcode for that transmitter (says I could get 80 channels from it as opposed to 94 from Sutton Coldfield despite the fact that BH is almost literally on the doorstep). But a postcode that's literally round the corner from Brierley Hill says Sutton Coldfield is closer (even though it was further westerly than BH).
I'd take the results with a pinch of salt.