I just checked www.spondonsportsassociation.org.uk and it is currently returning IP address 81.21.76.62
So I guess you haven't managed to successfully update the DNS settings on the 123-reg control panel. Or, if you have, for some reason they aren't being used.
If you need further help with this you should contact 123-reg support, or check their instructions here:
https://www.123-reg.co.uk/support/answers/Downloadable-Guides/dns-management-guide-1451/
Thanks
Joe - Voice Admin