Guitar hero Brian May has said when it comes to scientific issues, parliamentary debate is lacking expert opinion – a point highlighted by the recent badger cull in parts of the UK.

Speaking to IBTimes UK, May said MPs need to learn more about the science behind specific issues when debating them.

I think again there are some MPs who do take the trouble, he said. I think whats lacking in parliamentary debates is an expert opinion. You watch people debating an issue like the badger cull and there was no one called to speak to the house who actually knows the subject and has spent their lives studying it. Thats wrong to me, youre getting second hand opinions.

Basically whats going to happen is that at the end of the debate the whips are going to come in and get people to vote a particular way. Its a foregone conclusion. Even if they dont do that the government can ignore the result.

May was speaking at the unveiling of the Common Decency campaign, which aims to encourage more people to vote while calling for reform of the UKs political system.

He said he would consider accepting a future peerage and sitting in the House of Lords, but ruled out running to become an MP: I considered it but I think I can do a lot more good by being an activist as I am, he explained.

The Queen guitarist spearheaded a petition to stop the badger cull in 2012, with his e-petition going on to become the most signed on the governments website with 304,255 signatures.

Independent scientific studies have shown that culling would be of little help in reducing bovine TB, and even suggests that it could make things worse in some areas, the petition said.

We urge the government to stop the cull and implement the more sustainable and humane solution of both a vaccination programme for badgers and cattle, along with improved testing and biosecurity.

The petition failed, however. Environment secretary Owen Paterson gave the go ahead to the Department of Food and Rural Affairs to push ahead with the cull in February 2013. The four-year cull resumed in Gloucestershire and Somerset in September last year.

Just a few months later, further independent research was released suggesting testing cattle for bovine TB was 20 times more effective at controlling the spread of the disease than killing badgers.

Speaking about the parliamentary debate on the failed petition, May said: Youre looking at people – you can see it in their faces, we saw it with the badger cull - theyre sort of lolling in their seats saying oh well, were just going to carry on doing what were doing. It doesnt matter about science, it doesnt matter about public opinion. Were just going to do it because of our own reasons.