Czech Amateur Radio operators - OK6BAR, OK7BAR, OK2BAR, OK7OBA were on 2014, July 21-25 operating from village Hockliffe, Bedfordshire, UK where was Czech military radio centre during the Second world war built. They operated just from the Trinity Farm where was the radio centre situated. More about this part of Czechoslovak resist during the WWII can be read here:
http://www.airfieldinformationexchange.org/community/showthread.php?6669-Hockliffe-military-radio-centre-(Czech-vojensk%E1-radiov%E1-%FAst%F8edna)
The whole expedition was realized to commemorate the 70th anniversary of landing and operating the Barium paragroup in occupied Czechoslovakia.