The first step in identifying your piece of pottery or porcelain, (and possibly glass), is to carefully examine its underside for any identifying mark - printed, hand painted or impressed, and the rest of it for any signatures if it is hand painted.
Impressed marks can be very difficult to make out - try taking the piece outside, (natural light is better than tungsten), or use a piece of blue-tack or similar to create a 'negative'.
We have a number of pages dedicated to help you in your research;
Scenes from the Potteries in the 1800s. The air may be cleaner, but the area is a sad site now with virtually all of the once powerful factories of the Staffordshire Potteries closed down and their production moved to the Far East