Great quiz. I found two issues. Could you use a better photo of Denise Lewis? I know her face well but could not recognise her from this dark image. Secondly I entered "Johnson-Thompson" but scored nowt for it.
Thanks for letting me know re. KJT, 'Johnson-Thompson' will now work. It's the only image of Denise Lewis on Wikimedia Commons, so I've played around with the brightness/contrast controls. Hopefully it's a bit clearer. Glad you liked the quiz! Cheers, Baz.