249 Ionosonde ?. Braybrook ?. Hazell A.F. Wilkins Admiral Sir Henry Jackson B.G. Pressey C. Morris C.S. Fowler Chilton Chris Scott Ditton Park G. Ashwell J.E. Herd Jeremy Curtis John Bradford John Smith Karl-Heinz Müller L. Hainsworth Lerwick Matthew Wild Meteor Radar Mike Harris Ocean Surface Current Radar R. Naismith R.W.N. Mason RADAR RAE Aldershot Robert Watson-Watt Stanley V. Norris W. Allen W. Bailey W.M. Curtis