The investigators will recruit people via the Increasing Access to Psychological Therapies (IAPT) service from up to 15 sites in England. People still scoring highly on an anxiety measure (GAD-7) despite having received a low intensity psychological intervention will be given a brief flyer about the trial. Names of those interested in taking part who have given written consent to having their details released will be passed to the research team and the IAPT staff will also let the research team know the name of the participant's general practice, with their permission.