From today you can!
Send "TPS," followed by your email address, to 78070 to get on TPS database:
http://media.ofcom.org.uk/news/2016/tps-text-to-register-service/
Send "TPS," followed by your email address, to 78070 to get on TPS database:
http://media.ofcom.org.uk/news/2016/tps-text-to-register-service/