From the UK by train: Take the Eurostar train to Amsterdam. From there take the fast train to Groningen (about two hours). In Groningen take the local train to Usquert (30 minutes), and then it’s a two minute walk.
From Schiphol Airport: take the fast train to Groningen (about two hours). In Groningen take the local train to Usquert (30 minutes), and then it’s a two minute walk.
From Germany: take a train to any station in Holland, and then the fast train to Groningen. In Groningen take the local train to Usquert (30 minutes), and then it’s a two minute walk.