Macmillan Cancer Relief is planning to take its Mobile Cancer Information Centre to Scotland and Northern Ireland as part of its third annual UK tour.
The tour is designed to advise cancer sufferers and publicise the charity's work. A trailer will be staffed by Macmillan nurses and volunteers, who will offer counselling, hand out leaflets and the number of Macmillan's freephone cancer line, and provide information such as details of local support groups.
The trailer and staff will stay in 50 cities for two to three days from 22 April.
Agony aunt Claire Rayner, who is spearheading the tour, said the idea behind the scheme is to give people information on cancer to encourage the early detection of the disease.
Macmillan press officer Kirsty Warwick said it was also a good way of drumming up support for the cancer charity.
"Seventy per cent of visitors to the information centre have had no contact with Macmillan, so we are reaching a whole new group of people," said Warwick. "The trailer is also driving up and down the motorway, which raises public awareness."