Caravans Mr. Jim Lester asked the Secretary of State for the Environment what estimate he has made of the number of holiday caravans on licensed sites in the United Kingdom. Mr. Marks We have made no such estimate, but the National Caravan Council has estimated that there are approximately 245,000 static holiday caravans on licensed sites in the United Kingdom. Mr. Jim Lester asked the Secretary of State for the Environment how many licensed sites for holiday caravans exist in the United Kingdom. Mr. Marks This information is not available centrally. The licensing of caravan sites is carried out by local authorities, which keep registers of the licences issued in their areas. However, the National Caravan Council has estimated that in 1977 there were approximately 5,000 licensed static holiday caravan sites in the United Kingdom with six or more pitches.