New frontiers

Today's walk: we live a mile from the Northern Frontier of Tier 4.
This is the bridge taking the (old) A5 over the frontier, from Milton Keynes on the right (Tier 4) to South Northamptonshire on the left (Tier 2). No border post ... yet ;-)

The extras show other theoretically closed border crossings: looking from Tier 4 to Tier 2. The last one is always locked off!!