Moved to Lancaster for a few months after graduating in 2005. Still here and love it. Good pubs, the Dukes Theatre is good and gets good productions and films, and the people are mostly friendly. The 2 universities give the town more culture and entertainment than a town of this size should get. Housing is cheap and you’re only 2.5 hours on the train to London.
In an hour you can be in the middle of Manchester or in the middle of nowhere in the Lakes / Dales.
The mountain biking from the door isn’t really available but it’s only 30-45 mins to the Lakes or Gisburn. But the road riding is fantastic. The Trough of Bowland is good fun or there are lovely easy rides around the coast.