Lyophilized laboratory sample of synthetic malaria vaccine SPf66, 1987.

Laboratory technician at the Drug Control Centre, King's College, London, 2000.

The Drug Control Centre, King's College, London, 2000.

Laboratory technician at the Drug Control Centre, King's College, London, 2000.

Laboratory technician at the Drug Control Centre, King's College, London, 2000.

Urine sample in a tamper-proof jar, 2000.

'Spin Offs From Space' exhibition, Space Gallery, Science Museum, 2001.

World's largest abacus, Science Museum, London, 23 January 2001.

'Wizard' with giant abacus, Science Museum, London, June 2001.

Children learning how an abacus works, Science Museum, London, 2001.

'Wizard' with giant abacus, Science Museum, London, June 2001.

World's largest abacus, Science Museum, London, 23 January 2001.