In reply to Mancclimb:
Roughly how old is your house and if older than 1990, have you or previous owners had any alterations done around the door frame?
If it's older than 1980 then it will probably have a small wooden lintel above the door frame holding up red brick so you will need plugs and screws. The screws will need to go into the brick by at least 40mm, just remember you have to drill through the plaster before hitting the brick
If it's newer than 1980 then it will be most likely breeze block which is much less dense. You will need to go with longer, thicker fixings and drill a tighter hole than red brick.
If it's plasterboard then I would recommend the metal spiral fixings and use a bit of silicone on the back of the hangboard to help stick it to the wall as plasterboard isn't very strong. No nails I wouldn't use as it will damage the plasterboard if you decide to remove it.
Good luck.