At the previous primary school I taught in, recruitment was so bad that they had already resorted to recruiting OTT. We had one from S. Africa and another from the USA. Neither had even so much as taught in a British school before and they were paid as unqualified teachers too.
The S. African one didn't last very long. She was appalled at the behaviour from the kids in the school and left for a better school. The American struggled along for a few years (Phonics teaching was a real challenge given her pronunciation issues), then got pregnant and never returned after having the baby!
Things were already that desperate there, as no-one wanted to teach in that school nor send their kids there (undersubscribed in almost every year group). This was before COVID, so about 4-5 years ago now.