agreed! and if you don't know the local non-emergency number where you are, PLEASE-- don't dial 999 unless someone's life is at risk or a crime is ongoing.
i did my first lot of night caching last week, both a reflector cache with a torch, and a normal cache in the dark. both were great fun.
and i would thoroughly recommend ebay for 99p LED torches shipped from china. and cheapy AAA batteries from wilko's