There's all sorts of wild food they'll eat. Take a plant book out in the garden -- they like plantain too, and sow thistle gets munched up in double quick time. Young bramble leaves (the young ones have softer spikes) go down a treat too. Chickweed and groundsel are good ones, but there's not much down here in the Southwest. However, I think a lot of Essex is arable farms, which is where it grows, so that might be good. We live on a farm, so when the weather's bad, I take a bag out on my dog walk and pick a big bag of grass and other forage. I call it Hedgerow Delight -- they go crazy for it, and start squeaking if they hear a plastic bag rustling!