EGNOS any use?
Yea it is; for those jobs that require less than full RTK levels of precision (10/20mm), there are several handheld GNSS combinations on offer, all of which are EGNOS enabled. In survey terms, a simple single-frequency handheld can achieve 300-500mm in plan – not bad for a free correction service! Practically, the antenna needs to be south facing (or mounted on a pole), as your body will kill the signal. This is because the 3 EGNOS satellites are very low in UK skies, orbiting above North Africa. Even if the device uses SmartNet/TopNet, in areas where there is limited mobile internet (GSM/GPRS), EGNOS will allow you to continue, accuracy permitting. See http://www.esa.int/esaNA/egnos.html for more info.