or London particular, subs. (common).A thick fog.
1852. DICKENS, Bleak House, ch. iii. I asked him whether there was a great fire any-where . O dear no, miss, he said. This is a LONDON PARTICULAR.
1889. Sporting Life, 4 Jan. A very severe cold caught by him during a nine hours contact with LONDON IVY.
1890. The Sportsman, 13 Dec. If only from the question of cost it is clear that a clean sweep should be made of LONDON PARTICULAR.