My 8yr old daughter had ringworm about 12months ago (caught from school) and she was prescribed Daktacort cream by our GP. It's is highly contagious and can take up to 8wks to clear (according to our doctor).
My daughters was at the top of her calf and so it was fairly easy to keep it covered with trousers - but being 8yrs old (just turned) she was always touching it and she had a breakout of it appear underneath her chin and on her chest.
We had to be very vigilant in stopping her from touching it/rubbing it - the one on her leg took about 7wks to fully clear, but the one under her chin looked like a graze after about 2-3wks and was almost invisible after 4wks.
Canesten is a fungal cream so you can continue to use that or you can buy the Daktacort cream over the chemist counter without prescription.
As long as you apply the cream (we used cotton wool or tissue to rub the cream in then washed our hands) twice daily then it should clear fairly quickly.
I hope this helps