Tim is a Professor of Bioinformatics in the School of Basic & Medical Biosciences and former Head of the Department of Medical & Molecular Genetics, as well as a Senior Advisor at Genomics England and Associate Director of Health Data Research UK (HDR UK). Since 2013, Tim has been seconded to Genomics England, the company set up by the UK Department of Health to execute the 100,000 genomes project. Genomics England has enabled the use of whole genome sequence analysis in normal patient care, closely linked to the establishment of NHS Genome Medicine Centres, now Genome Laboratory Hubs, one of which is based at Guy's and St Thomas' NHS Foundation Trust. In 2017 Tim led for KCL in the London wide bid to be a site of Health Data Research UK (HDRUK), the national virtual institute set up to unite UK's health and care data. He went on to lead Trusted Research Environment (TRE) policy work at HDR UK, building on work at Genomics England where data is analysed in place to protect patient privacy and provide transparency. The TRE approach has recently been adopted as policy by NHS England, with London now building a one of the regional Secure Data Environment to enable health data research.