One of the famous British short novels is 'The Pit and the Pendulum' by Edgar Allan Poe (although he was American - born, but he was associated with the British literary scene to some extent). It's a terrifying story of a prisoner's ordeal. 'The Yellow Wallpaper' by Charlotte Perkins Gilman, while an American writer, was also influenced by British literary trends. And 'Dracula's Guest' by Bram Stoker is an interesting addition to the collection of short horror stories from the British Isles.
Well, 'A Christmas Carol' by Charles Dickens is extremely well - known. It tells the story of Ebenezer Scrooge and his transformation during Christmas time. Then there's 'The Happy Prince' by Oscar Wilde. It's a touching tale about a prince statue and a little swallow. 'Sredni Vashtar' by Saki is also a remarkable British short novel with a rather dark and satirical tone.
Sure. 'The Signal-Man' by Charles Dickens is a great one. It's a ghostly and atmospheric story. Another is 'The Turn of the Screw' by Henry James, which is full of psychological tension and ambiguity. Also, 'The Rocking - Horse Winner' by D. H. Lawrence is quite famous, exploring themes of family, greed and the search for luck.