Was the royal pioneer corps in the royal air force?

Answer 1

No, the Royal Pioneer Corps was part of the British Army.

The Pioneers (nickname - "The Chunkies") was a military labour force which usually worked closely with the Royal Engineers building camps, field fortifications, general facilities etc; the Corps was also responsible for recruitment and management of locally recruited civilian labour forces.

Pioneers were also fully trained infantrymen, and played a key role in providing security for headquarters and other sensitive sites. They were also available to divisional commanders as a general infantry reserve force.

The Corps had its depot in Northampton in the English East Midlands. They were often mocked by other soldiers, but in fact were invaluable general purpose "utility" troops whose ranks often included multiskilled soldiers and military eccentrics whose capabilities did not quite "fit" into any other unit. In recent times their roles have been subsumed into the Royal Logistic Corps, so they're still part of the British army, just under a different guise.