This would be of huge benefit to musicians. You don’t have to be in the Musicians Union to do it. It takes 10 seconds.

http://www.musiciansunion.org.uk/news/2013/05/16/urgent

Over the past six months, the MU have been trying to get the Government and HMRC to change the regulations that state that self-employed  musicians now fall under Class 1 National Insurance (NI).

The current situation poses huge problems for musicians  and for those who engage musicians as a result of them having to pay  employees’/employers’ NI.

Film producers, who bring lucrative inward investment  into the UK’s creative economy by way of recording soundtracks for films, are  expressing concern about engaging UK musicians as a result of the extra  expense. If these regulations are not repealed, we may also see the closure of  a number of orchestras.

A consultation document has now been published by HMRC  which supports the MU’s arguments, but it is vital that as many musicians as  possible respond.