Staurogyne sp. "Bihar" originates from the north Indian state Bihar and this is where this beautiful aquarium plant gets its name from. Some consider it a Hygrophila species, but it flowers just like a Staurogyne, and this is what experts believe it originates from.
When this aquatic plant is submerged, it looks a bit Like Hygrophila pinnafida. Although it's been popular and widely available in the US for a long time, Europe has been slow to adopt for some reason. It's a pretty plant and will do very well in the UK hobby.