Rydberg atoms are atoms for which one or more electrons are excited to a high-lying state. Rydberg atomic states are highly sensitive to external electric fields and as a result interest has grown in using ‘Rydberg receivers’ for sensing and communications in the microwave region of the electromagnetic spectrum. In this talk we present recent results where we use Rydberg atoms in thermal vapour for fast imaging in the terahertz frequency band as well as sensing radiofrequency fields in the VHF/UHF bands.