Profile: Tasha Chandler, Phil Snowden and Louisa Brown

This month's letters consider the role of professional oversight, the risks of fracking, potential changes to Building Regulations and product testing in the aftermath of the Grenfell Tower fire, and also provide further details on the Comet aircraft failures of the 1950s.

Peter Sparkes provides some background to the recent article on the strengthening of the Hammersmith Flyover, describing the investigations that triggered the strengthening programme.

If your dream job involves castles and stately homes, it's unlikely you would turn your attention to structural engineering. But as Kim Rochard explains, it’s possible to combine the two in the specialised field of conservation engineering. Helena Russell finds out more.