Can hemmeroids be long and thin, going down from the anus, vascular appearance very very sore?

YES: Yes it can...Please check with your doctor, he'll refer you to a specialist in the nhs.

Veins: Hemorrhoids are normal veins in the anal canal. They can become inflamed or enlarged with constipation or prolonged and repeated straining to have a bowel movement. Treated at home by avoiding constipation, drink plenty of liquids, eat more fiber (fruits, vegetables, metamucil), avoid junk foods. See a surgeon if symptoms persist.