Aggie was born in Rothiemurchus, near Aviemore, Scotland. At high school she discovered an aptitude for languages; she can say 'filth' in German, French, Italian and even Latin! Aggie and her three sisters were taught the art of cleaning by their mother, who deployed a dizzying array of remedies for spots and stains.

Aggie studied in Aberdeen, then went to London to work at the Foreign Office. On her first day, they told her she had been security-screened and would in fact be working for M16. After two years she abandoned her Miss Moneypenny position to pursue a career in women's magazines, and eventually ended up at Good Housekeeping as associate editor in charge of the Good Housekeeping Institute, testing the latest consumer appliances, developing and testing recipes and investigating new cleaning products and gadgets.

In 2002 Aggie was invited to take a screen test alongside a housekeeper called Kim. A few months later 'How Clean Is Your House?' was born and Aggie and Kim became the nation's dream cleaning team, with Aggie specialising in ramming home the dangers of living in high levels of bacteria. The show is in its fifth series in the UK, is broadcast all over the world, and Aggie and Kim have made two series especially for the US. The success of How Clean has led to spin-off programmes including 'How Clean Are The F*ilthy Fulfords?', 'Too Posh To Wash' and 'When Kim and Aggie Went To Hospital'.

Aggie and Kim have produced three books, 'How Clean Is Your House?', which sold over half a million copies, 'Too Posh To Wash' and 'The Cleaning Bible'. Aggie also writes a weekly column, 'Ask Aggie', in the Saturday Times Magazine.

Aggie and her architect husband Matthew live in north London and have an allotment behind their house; he does the grafting, she harvests. They and their sons Rory (16) and Ewan (12) all love to cook...but Aggie is usually left to clear up.