David Thurston was a familiar character in the Evening Standard's newsroom until 1985 when he picked up his camera and hit the road. His passion for China launched the travel binge, and Along the Way is his title for this three-decade retrospective of photographs which he took for his own pleasure, between assignments for magazines and newspapers.

Such images always reveal most about a photographer - in his case, a compassionate, skilled observer at work in China, Cuba, Hawaii, Chile, Thailand and home in Devon.

Thurston is neither a drama seeker nor a war junkie; instead, he achieves invisibility in the search for detail and informal moments: a Chinese man fishing in an ice-hole, Cubans playing dominoes, a barefoot Thai boy carrying his brother in a sling contrasting with the plumply arrogant Chinese boy smoking a cigarette. These often seemingly casual shots form archives of vanishing lifestyles.

Thurston's strong sense of design is apparent everywhere and his work would inspire any photography class. Most blatant are the grid-like parade of Chinese soldiers' perfectly patterned caps and helmets, and the mandala-like impression of Muslim men in prayer hats eating from a large circular dish with outstretched, spoke-like arms, and the vertical zigzag of a tourist group climbing a sheer cliff path.

Mounted on aluminium sheets, the photographs float, each one a window into the photographer's memory.

• Until 17 November. Information: 020 7261 9080, www.waterloogallery.co.uk.