Profile: John Roberts

This month's letters continue the discussion on the value of the brainteasers in the publication, offer another view on load factors, request that building control records be kept for posterity, and address concrete detailing.

Stephen Hargreaves of insurance broker Griffiths & Armour discusses the recent experiences of UK consultants with regards to liability and contractual terms.

From plastic theory to magnificent cathedrals, Jacques Heyman has had a long and varied career. Helena Russell maps the highlights.