For a basic introductory book, I would recommend 'The Massage Manual' by Fiona Harrold (the founder of the London College of Massage). It is very well-illustrated and has eight chapters showing sequences for different parts of the body.
If you subsequently want to refer to a book which is more advanced but still well-illustrated, I would recommend 'Basic Clinical Massage Therapy' by Clay & Pounds.
Another book that I would recommend (for a discussion of how to earn a living from massage, rather than for massage techniques) is 'Massage: A Career at Your Fingertips' by Martin Ashley. It is aimed at the American market, but is still very useful for British readers.
Regards
Alan