Following an agreement between the Ordnance Survey and the University of Nottingham to cooperate in the field of satellite Doppler techniques, two observational campaigns were carried out in the United Kingdom. The first campaign, which was held in 1976, aimed at obtaining the geocentric Doppler coordinates of 13 stations forming part of the primary triangulation network of Great Britain. These were supplemented in 1978 by observations carried out by Decca Survey Ltd on seven additional stations which, together with the other 13 stations, covered the area of the whole network. The second major observational campaign was conducted in June 1978 and involved nine primary triangulation stations along the Edinburgh--Malvern--Dover precise traverse. These observations were carried out in order to test the accuracies that can be achieved by the `short arc' technique. Details are given of the organization of the field observations, the equipment used and the logistics, concentrating on the precautions taken to avoid or minimize the effects of instrument malfunction and operator errors.