THE British Tourist Authority has announced a package which promises a seven day tour for only HK$1. To qualify, two adult passengers must travel together on British Airways on return PEX fare to London ($11,160 each) up to April 21 or from June 22 to September 30. For $1 extra a seven-day British Vista tour plus two nights accommodation in London is offered. The coach tour takes in many scenic and historical areas of England, Scotland and Wales. For more information contact your travel agent, who will make the arrangements through P and O Travel, or ring P and O at 5433878. MORE travel guide books have come on the market. On the Waterfront in Britain and On the Waterfront in France, each priced at HK$118, give information on hundreds of hotels, pubs and restaurants, and nearby activities. The series is published by Fontana. The 10th edition of The Family Welcome Guide, also published by Fontana ($118), lists more than 600 establishments in the British Isles that have special facilities for children. ITT Sheraton has opened its ninth resort in the Asia Pacific region, the Sheraton Manikar on the island of Labuan, off the western coast of Sabah. The hotel has 250 ocean view rooms and a number of suites. There is a business centre and for the athletic, a water sports centre. MALAYSIA Airlines has introduced a phone of fax check-in service for First and Business Class passengers and card-holders of MET (MAS Esteemed Traveller). Check-in may be made by fax within 48 hours of departure and by phone, within three hours. Fax: 362-1276. Phone: 769-8244. Travellers' Check copy should be sent to PO Box 47 or faxed to 980-3140.