raggedjimmi,
You've said you weren't keen on the South. I understand about London, it's kinda hellish there. But what about Gloucestershire's Cotswolds, Somerset, Devon, Dorset, Cornwall and Hampshire's New Forest - all beautiful to see!
I would have to say the South tends to get far better weather than up North anyway. I remembered having to travel up to Blackpool by train from Bournemouth all in a day which it was warm and sunny in Bournemouth then to arrive in Blackpool that it was bucketing down with rain and felt chilly!
I wouldn't call Saddleworth as beautiful as it's an infamous murder scene after all plus Manchester can get a tad grimy in the dark winter months anyway.