I may be cynical, but to catch a wolf you have to think like a wolf (as they say)
Recruitment is different to Employment.
Everyone in the/a talent pool is effectively "recruited" but that doesn't necessarily mean employed.
For quota purposes to bring forward to DfT, I can say "I've recruited/looking to recruit 100 drivers this year" without actually employing any. Though this doesn't solve the driver shortage, it doesn't stop Avanti from filling up the pool as and when they please.
Especially if trying to meet diversity targets.