My research interests include the development, evaluation and implementation of self-help and digital mental health technologies for common mental health problems. This work explores both engagement and outcomes associated with contemporary interventions and the mediators and moderators of these effects. Current studies focus on innovative cognitive behavioural and mindfulness-based interventions and span public health, occupational health and healthcare contexts. I've published widely on the topics of digital interventions, e-mental health, increasing access to psychological therapies and self-help. Recent publications from my group include widely cited systematic reviews and meta-analyses exploring the evidence base for in-person, self-guided and digital mental healthcare interventions. I've been involved in organising and evaluating clinical trials of digital interventions since 2001. My recent and ongoing research has been funded by NIHR, ESRC, EPSRC and Headspace.

I've served as President-Elect of the International Society for Research on Internet Interventions (ISRII), and am a Founding Director of their European partner organisation – European Society for Research on Internet Interventions (ESRII). I've served as a consultant to a number of healthcare companies, organisations and international research projects exploring the implementation of digital mental health technologies.