The Battle of Britain Five Months That Changed History, May—October 1940 by James Holland (z-lib.org).epub

landed in England on 22 June. About a hundred of the men on board were
Czech and Polish airmen – pilots and groundcrew. Their journey was still
not over, however. Bundled on to a train, they were taken north to
Blackpool and there put into quarantine. Checked and interrogated and
medically examined, they discovered there would be no immediate transfer
into the RAF.
They also found themselves constantly at cross-purposes. Jan knew
‘yes’ and ‘no’ but that was the limit of his English. A friend of his was
asked whether he had VD. The Pole had no idea what he was being asked,
but the doctor looked very solemn. ‘So he took a chance,’ noted Jan,
‘answered yes, and was promptly hauled off for a vigorous massage of the
prostate which left him white with rage.’
For Air Chief Marshal Dowding, in desperate need of pilots, these men
were potential gold dust. After all, few now in Britain were more ready and
willing to try and shoot down Germans. This, however, was not yet
understood or appreciated, and so for the next three weeks Jan and his
fellows would remain under guard in Blackpool.
But their time would come. All too soon Fighter Command would need
every fighter pilot it could lay its hands on.