One of the brilliant projects that came from cheap SDR dongles is the ability to put a radio on the internet and stream its audio. This list is a collection of some of the popular UK based SDRs. Others are available at websdr.org and kiwisdr.org
Jodrell Bank SDR – http://81.174.147.103:8901/
Covers: 2m, 70cm, PMR, 10, 11, 6, 20, 60, 80)
Hack Green HF SDR – http://hackgreensdr.org:8901/
Hack Green VHF SDR – http://hackgreensdr.org:8902/
Top Band SDR (Herts) – http://topband.ddns.net:8901/original-index.html
4m SDR (Herts) – http://80.2.245.2:8091/
2m SDR (Herts) – http://sdr.codedv.com:8092/
Wales CB SDR – http://sdrmark.proxy.kiwisdr.com:8073