Based on these stats (accurate to 1/12/2010) the box bringing most of the 6 figure sums to the table is box 12 (9 times) and the box bringing the least 6 figure sums to the table is box 3 (3 times)

Interesting to note upto now, box 21 hasnt bought the £250,000 to the table. By my working out it is a 1/484 chance for a particular box to come to the table containing £250,000? Therefore each box should have bought the £250,000 at least 3 times by now? Correct me if i'm wrong..

£250,000
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21
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£100,000
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Pip brought the £250k to the table in Box 4 but hypo-swapped it away, I know that much. I thought about Psychic Sarah with number 21 but it wasn't there originally!

Of course, this leaves 21 yet to bring it to the table.