Aggressive inline skating is a form of inline skating executed on specially designed inline skates with focus on grinding and spins.
Anti H-Block was the political label used in 1981 by supporters of the Irish republican hunger strike who were standing for election in both Northern Ireland and the Republic of Ireland.
An H engine (or H-block) is an engine configuration in which the cylinders are aligned so that if viewed from the front, they appear to be in a vertical or horizontal letter H. An H engine can be viewed as two flat engines, one atop or beside the other.
H-Blockx is a rock band founded in Münster, Germany in 1991.
Her Majesty's Prison Maze (previously Long Kesh Detention Centre and known colloquially as the Maze Prison, The Maze, the H Blocks or Long Kesh) was a prison in Northern Ireland that was used to house paramilitary prisoners during the Troubles from mid-1971 to mid-2000.
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz).
The Royal Air Force (RAF) is the United Kingdom's aerial warfare force.