What have Trade Unions ever done for us?

Thanks to tutor2u for this
http://www.tutor2u.net/economics/blog/what-have-trade-unions-ever-done-for-us?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Thu%2011th%20February%202016&utm_content=Economics%20daily%20digest%20Thu%2011th%20February%202016+CID_d0606d8e055d03db78e0e8929e81a98c&utm_source=CampMonitor&utm_term=What%20have%20Trade%20Unions%20ever%20done%20for%20us%20For%20students%20born%20in%20the%20aftermath%20of%20Thatcherite%20reform%20which%20cast%20the%20unions%20as%20the%20industrial%20bogeyman%20this%20TUC%20video%20goes%20some%20way%20towards%20redressing%20the%20balance%20So%20what%20have