Monsters or baddies under the bed.
The long, dark journey from my bed to my parents' when I'd had a nightmare and the fear that a ghost or something would grab me en route!
The fear of my cats dying. I used to have upsetting nightmares - first I'd get one about my sister dying, which was sad and scary. The one about my Mum dying, which was even more sad and scary. Then one about the cats dying, which upset me so much I'd wake up sobbing. My Mum was very patient about my priorities when I ran into her room crying!
Ghosts. There was a series, grown up TV, with paranormal detectives - think Joanna Lumley was in it? - where there was a ghost on an abandoned underground station who whistled 'Pack up your Troubles in Your Old Kit Bag' that worried me for years.
Spontaneous human combustion - I'd seen that picture of someone where only their ankles and shoes were left in a magazine.
Cybermen and Daleks. I jumped six feet in the air when they brought cybermen back to new Who (dh laughed himself silly, the git - he'd spotted a glimpse of the feet earlier in the programme so was prepared).
Clowns. Think I'd seen an ad for a horror movie with an evil clown.
The Amityville horror - read about it in one of my mum's women's magazines. eek. eek. eekety eek - NOT suitable for children.