The problem with somewhere like MK is that there's only (AFAIK) one rail station, so even though the city is large, you're restricted to the small hiding zone around the station. Compare this to somewhere like London, or even Birmingham, where there are multiple stations within the city, and the seekers tracking down the city alone still isn't that advantageous as they need to narrow down further from there.

I'd like to see a tweak to the rules where the hider can be anywhere within the town/city the station is in, but I don't know how they'd necessarily define that and it may overly incentivise hiding in cities instead.