The ancient English university at which, in the future shown to Picard by Q, Data is Lucasian Professor of Mathematics and lives in a house full of cats.
Cambridge University appears in the future time period of the Next Generation finale All Good Things.... Some twenty-five years after the Enterprise-D's mission, Data holds the Lucasian Chair of Mathematics there, the post once occupied by Isaac Newton and Stephen Hawking, and lives in the residence that goes with it.
The elderly Picard and Geordi La Forge travel to Cambridge to seek his help in reaching the Devron system. They find Data surrounded by cats, sporting a grey streak in his hair that he hopes makes him look distinguished, and looked after by a sharp-tongued housekeeper named Jessel, who disapproves of the visitors.
Data listens to Picard's account of shifting through time, concludes that it cannot be dismissed as illness, and agrees to help him find a ship. Because the timeline is one of Q's possibilities, this future is not fixed.