Broad-bordered Yellow Underwing Noctua fimbriata is a common moth in Yorkshire but I have only ever caught one in my suburban garden and that arrived on 18th September 2009.
As it was a female I kept it in a container for a few days with some dock leaves and, sure enough, it laid a batch of eggs.
The larvae are spending the winter in my heated (for the guinea pig!) shed with a temperature ranging from 10-15 degrees celsius. They are munching their way through native Primrose plants purchased from the local garden centre.