Possible Clues:

• Element in matches
• An element of pressure over revised shop hours
• Spontaneously igniting element
• Element, symbol P
• Element used in making matches
• Element producing sort of light
• Element of matchmaking in dreadfully posh shop outside Rugby
• New shop repeatedly attracts right posh element
• It lights a couple of shops unexpectedly stocking game
• It's luminous witHOut heat