High-significance Sunyaev-Zel'dovich measurement: Abell 1914 seen with the Arcminute Microkelvin Imager by Collaboration, AMI, Barker, R, Biddulph, P, Bly, D, Boysen, R, Brown, A, Clementson, C, Crofts, M, Culverhouse, T, Czeres, J, Dace, R, D'Alessandro, R, Doherty, P, Duffett-Smith, P, Duggan, K, Ely, J, Felvus, M, Flynn, W, Geisbuesch, J, Grainge, K, Grainger, W, Hammet, D, Hills, R, Hobson, M, Holler, C