@Robert Charlton: We have two main styles of pages on our site, list pages and product pages. Our internal links on the desktop version are shortcuts to other categories mainly. We're going to move those links onto a separate page on our mobile site, so you click the search icon in the top right and go to a dedicated navigation page with those links and a search box. It seems common enough functionally speaking on other mobile sites I've seen. We'll test it out and see how we get on!