Hiya guys,
Thanks Wally for the heads up about this.
Well toot ma horn and call me Sheila, yes you have found a bug with the iPad and my site!!!! My site was fully tested with iPad, IPhone etc but it looks like the recent IOS updates have broken that menu a bit
Until I get a proper fix I have changed the menu on the home page so now at least with an iPad you can enter the categories, once in there, there are links, if you want to drill down into the sub categories.
Hope thats better for now,
Nige.