I’m just north of Blackburn in Wilpshire. Preston is on the flatlands of the Ribble estuary and the Fylde so going north or south you’ve got flat easy riding to seaside resorts like Southport and Blackpool although traffic can be heavy. Inland you’re a few miles from Longridge and then Whalley, Clitheroe and further north, Chipping and Dunsop bridge and thence on via Slaidburn to Gisburn. All excellent road riding on empty roads with plenty of cafes and pubs. Riding in the Ribble valley / Bowland fells it’s quite common to meet road clubs from the Fylde and as far away as Warrington out for a day trip to the empty roads and hills of this overlooked area.
If I was you I’d be looking for somewhere to live in or around Longridge. The north side of Preston, Fullwood, has big Victorian houses and lots of flats, I expect. Preston itself is a bit of a dump with the longest traffic light timings I’ve ever experienced. There’s one shopping street with the usual selection of crap English provincial town stores, charidee shops and fast food joints.
Oh and you will be in the land of the very excellent Booths supermarkets, based in Preston. Many of them have great cafes and their beers are top notch. Look out for the local Bowland Breweries.
For mountain biking you should check out Bogtrotters.