In reply to marsbar:
Yorkshire did lose parts of its Ridings after Maud but in terms of acreage i think Lancashire probably lost a lot more.( As one born and brought up in Saddleworth, the snobbish side of me would rather have gone over to Lancashire proper instead of Greater Manchester)
And to Peppermil, how on earth is Sheffield not Yorkshire? You'll be saying Barnsley's one of the Home Counties next.