In a funded intervention development study (Medical Research Council: MRC MR/P016944/1), our research team created a package of support called BabyBreathe™ to help women stay smoke free following the birth of a baby.

The BabyBreathe™ trial has finished recruiting. Women who quit smoking during pregnancy, or in the 12 months before pregnancy, were identified across four areas of the UK (Norfolk, London, Scotland, North East). If they agreed to be part of the trial, they were put into one of two groups, receiving the support of BabyBreathe™, or usual care, with the same chance of being in either group.

If you are in the BabyBreathe study and are wanting to provide a CO reading using your iCO monitor, direct links to the apps are below, and full video instructions for use are available in the ‘Instructional Videos’ section at the end of this webpage.

Download the iCO Monitor from Google Play

Download the iCO Monitor from the Apple App Store


In an MRC funded intervention development study our research team created a package of support called BabyBreathe™ to help women stay smoke free following the birth of a baby.

This includes support from a health visitor, tailored online, app based and text message support, support to use alternatives to smoking and self-rewards to remain smoke free. 

We will measure how many women receiving the BabyBreathe™ support package are smoke free at 12 months following the birth of their baby compared to those not receiving additional support. We will assess the value for money of the package of support. We will also look into which parts of the package are most used, ‘liked’ and appear most effective by talking in depth to women, partners and health visitors.

The BabyBreathe™ trial is funded by the National Institute for Health Research Public Health Research programme. UEA are working in collaboration with St George’s University of London, The University of Edinburgh, University of Stirling, The Institute of Health Visiting, The University of Leicester, and NHS Norfolk and Waveney Integrated Care Board (ICB).


Name Area Email
Charlotte Wahlich London
Tracey Brown Norfolk
Pippa Belderson Norfolk
Louisa Clifford Taylor North East
Clare Sharp Scotland
Jennifer McKell Scotland




Professor Caitlin Notley


Chief Investigator

Professor Linda Bauld

The University of Edinburgh


Professor Tess Harris

St George's University of London

Co-Applicant, London recruitment hub joint PI

Professor Richard Holland

University of Exeter

Co-Applicant, Public Health trials expertise

Dr Felix Naughton


Co-Applicant, Lead for digital intervention component

Professor Wendy Hardeman


Co-Applicant, Intervention development, fidelity, process evaluation

Professor Dan Smith


Co-Applicant, Computing science lead

Dr Allan Clarke


Co-Applicant, Lead Statistician

Mr David Turner


Co-Applicant, Health Economist

Dr Sharon Duneclift

Cambridge Community Services NHS Trust

Co-Applicant, Clinical lead for Health Visitor research delivery

Mrs Vicky Gilroy

Institute of Health Visiting

Co-Applicant, North East recruitment hub PI and health visiting expertise

For technical support or help with the Babybreathe intervention website, app or SMS text message support system, please contact  

A copy of our data policy which relates to the BabyBreathe app is available to download. 

iCO monitor instruction video for BabyBreathe participants


iCO monitor instruction video for BabyBreathe health visitors