After the correct answer is displayed (the players' answer are not recorded), the players then decide on which celebrity was "stumped" (got the question incorrect; there were at least four occasions of the specialist celebrity being stumped).
If the players make an incorrect guess (meaning that their chosen celebrity, specialist or non-specialist, got the question right), they lose what they have accumulated so far.
They will still be allowed to continue playing at their current prize level, restarting their jackpot from zero.
If they select a stumped celebrity, their jackpot goes up by £1,000, £5,000, £10,000, £15,000 or £25,000 (depending on which ever level they were on) and the players take home with them whatever they have banked.
If they select a celebrity who answered the question correctly, they'll leave empty-handed.