In reply to John Neale:
I live in Chester and climb at around a similar grade, so should hopefully be able to help out here!
Helsby is the only crag within 15 miles. Most of the routes are above Severe, but if you're not averse to top roping or seconding there's some good routes to be had. Being sandstone, dry conditions are needed for it to be in good condition and not vulnerable to damage.
The A55 sport climb crags are good fun and convenient if you're willing to go the extra mile (so to speak!). As mentioned, Dyserth Castle slab has some good low grade routes. Just round the corner is Meliden quarry - limited routes, but a couple of trad climbs around your grade (trad not in A55 guide, but check out UKC crag index - the 'steps climbs' are very sparse on gear though). Pick of the bunch for low grade sport is Castle Inn in Colwyn Bay (50mins from Chester).
Other trad optins are Pothole Quarry (near Ruthin - but not much at all here below Severe) or Trevor (one or two severe's, plus sport routes too).
Hope this helps,
Mike.