There are many different places you can look for new signs through different forms of media.
Here are a few:
People
- Deaf people (general discussion)
- British Sign Language (BSL)/English Interpreters (general discussion)
- BSL students
- Deaf people (on-stage performance/interpretation)
- Interpreters (on-stage performance/interpretation)
Online resources
- signbsl.com
- youtube.com
- http://www.british-sign.co.uk/british-sign-language/dictionary/
- http://bslsignbank.ucl.ac.uk/dictionary/
- http://www.signstation.org/index.php/bsl-dictionary
- http://www.actualsigns.com/BSL_Dictionary-i-123.html
- http://www.bslcorpusproject.org/data/region/
TV programs
- SeeHear
- BSLZone
- Interpreted News
Dictionaries
- Dictionary of British Sign Language: Compiled by the British Deaf Association by David Brien and Mary Brennan
Have a look through it and see which you prefer!