Invited lectures at all of the following conferences: Int. Conf. Raman Spectroscopy, Jena, Germany Aug 2014 Lecture +Session Chair: Infrared and Raman Discussion Group, Exeter, UK Aug 2015: Nano-spectroscopy and Bioimaging Int. Conf. Coventry, UK 2015: HEMUS 8th Int. Conf. Defence & Security, Plovdiv, Bulgaria May 2016: CIMTEC, 5th Int. Conf. Smart and Multifunctional Materials, Perugia, Italy, June 2016: 2x invited lectures SCIEX 2016, Minneapolis, USA, Sept 2016: International SERS Roundtable, Germany Oct 2016, Plenary Lecture: Faraday Discussion on SERS, Glasgow, Feb 2017, Lead Speaker: SCIEX 2017, Reno, Nevada, Nov 2017 Invited lecture + session chair