In 2009 her fifth book, How to Lose a Husband and Gain a Life, followed in 2010 by Why Do We Have to Live with Men?, both published by Little, Brown.
In 2013 her seventh novel, The Valentine's Card was published by Little, Brown under the pseudonym of Juliet Ashton.
She has written a further three novels as Juliet Ashton for Simon & Schuster and four novels as Claire Sandy for Pan Macmillan.
She also writes screen and theatre works under her maiden name of Bernie Gaughan.
In 2017 Simon & Schuster announced that Strachan would be writing a crime thriller series with her composer husband Matthew Strachan under the pseudonym of M.B.