Which location is noted for having the most recent purpose-built airfield?

Mount Pleasant in the Falkland Islands is recognized for having the most recent purpose-built airfield. This airfield was constructed in the early 1980s as part of the UK's military presence following the Falklands Conflict. Its strategic location supports both military operations and humanitarian missions in the South Atlantic.

This contemporary design emphasizes operational capability, with modern facilities that cater to various aircraft and military operations. The airfield plays a crucial role in ensuring the British Forces' ability to deploy rapidly within the region.

In contrast, Northolt, Waddington, and Scampton have facilities that have been in use for much longer and have undergone various modifications over the years but were not specifically newly built with modern military operations in mind in recent times.