Reduction in mobility and COVID-19 transmission by Nouvellet, P, Bhatia, S, Cori, A, Ainslie, K, Baguelin, M, Bhatt, S, Boonyasiri, A, Brazeau, N, Cattarino, L, Cooper, L, Coupland, H, Cucunuba, Z, Cuomo-Dannenburg, G, Dighe, A, Djaafara, B, Dorigatti, I, Eales, O, van Elsland, S, Nascimento, F, Fitzjohn, R, Gaythorpe, K, Geidelberg, L, Green, W, Hamlet, A, Hauck, K, Hinsley, W, Imai, N, Jeffrey, B, Knock, E, Laydon, D, Lees, J, Mangal, T, Mellan, T, Nedjati-Gilani, G, Parag, K, Pons-Salort, M, Ragonnet-Cronin, M, Riley, S, Unwin, HJT, Verity, R, Vollmer, M, Volz, E, Walker, P, Walters, C, Wang, H, Watson, OJ, Whittaker, C, Whittles, L, Xi, X, Ferguson, NM, Donnelly, CA