Hi - only for practical reasons, in that I need to travel to those who take part in the study and am based in Leics myself. I am happy to include people wider than this area if I can make the travel work e.g. parts of Notts, Derbys, Cov & Warks, Rutland, Lincs, Northants etc. I would encourage those who are interested in being involved and who live outside Leics in the surrounding counties, to get get in touch and we can discuss ways we could make it work for both parties. Thanks for you question.