Which peninsula in southwest England contains Cornwall and Devon?

The peninsula in southwest England containing Cornwall and Devon is the South West Peninsula.

The South West Peninsula is the southwestern extremity of Great Britain, extending into the Atlantic and the English Channel. Cornwall occupies its far western end, while Devon covers much of the area immediately to the east; parts of Somerset and Dorset are also commonly included in broader regional descriptions.

The peninsula is known for dramatic cliffs, sheltered estuaries and exposed moorland. Bodmin Moor in Cornwall and Dartmoor and Exmoor in the wider southwest are among its best-known upland landscapes. The region’s location also gives it a mild, ocean-influenced climate.

The name can be confused with the broader South West England region, which includes counties farther east and north. It is also distinct from the Gower Peninsula in Wales and the Wirral Peninsula in northwest England. Cornwall and Devon are the key geographical clue identifying this peninsula.