The yellow line on the left edge of the road and the heavy traffic congestion strongly suggest the United Kingdom. The signage style and the high-security fencing are typical of major British motorway approaches, likely near a port or terminal. The road markings and the specific chevron pattern on the slip road are very characteristic of UK highway infrastructure. I suspect this is near the Port of Dover or a similar logistics hub in England. I am fairly confident in this assessment.

then: forward

The signage confirms this is the UK, specifically pointing toward the Port of Dover. The heavy freight traffic and the specific layout of the queuing lanes are unmistakable for the A20 approach to the Eastern Docks. The high fencing and security measures are consistent with the border control infrastructure in this area. I am very confident this is the A20 road leading into Dover, Kent.

then: guess