GNM chief executive Anna Bateson and Guardian editor-in-chief Katharine Viner wrote to several women on Monday…

“We want to apologise for your experience of sexual harassment by an Observer member of staff, and for the way your complaint was handled.. Everyone should feel safe at work and in the presence of their colleagues, and the incident you describe is absolutely unacceptable.

We know you feel very badly let down by GNM and that you have not felt confident in speaking to the company in the past about what happened to you.  We would like to understand what happened and to understand any failings on the company’s part.”