The prize winners are:
1st tikay £50
2nd 4ksuited £25
Congratulations.
tikay will be in contact with regard to payment, presumably once he is back home.
To add to my embarrassment of winning this - that was certainly not supposed to happen - I forgot all about this, & plum forgot to send the runner-up his prize.
All round fail, one way or another. Apologies.
However, 4ksuited, the Runner-Up, has written to me with a rather nice suggestion, which I'll post on Fred shortly.