Blunham is small enough that most people who live there already know most of the businesses that operate there. The interesting question is what happens with everyone else.
Blunham sits on the River Ivel a couple of miles from Sandy, and it's genuinely one of the prettier villages in this cluster — which is part of why it's attracted a steady trickle of new residents over the years, people who've moved out from Bedford or further afield and don't yet have the local knowledge that comes with growing up somewhere.
If you run a trade or a service business based in or around Blunham, those newer residents are searching for what they need rather than asking a neighbour, at least until they've settled in. And because Blunham itself is small, a lot of that searching actually happens under "Sandy" or "Biggleswade" rather than the village name — which means your Google Business Profile needs its service area set correctly, not just your pin dropped on the map, or you're invisible to search traffic from the towns right next door.
The RSPB's UK headquarters is just up the road at The Lodge in Sandy, which brings a surprising amount of visitor traffic through this corner of the county — worth knowing if hospitality or retail is anywhere near what you do, since that's footfall with no existing local loyalty at all.