A ROCK musician brought his extremely vocal – but harmonic – complaint against Nationwide Building Society to the firm’s Swindon headquarters yesterday.

Mervyn Spence, 54, a former member of ’80s rock legends Wishbone Ash, has vowed to spend the next week rocking out on a roundabout outside the society’s Pipers Way headquarters.

The father of two, who is in dispute with Nationwide over a mortgage, has even written a song he will be performing to passers-by, entitled Nationwide – You’re Not On My Side, mocking the company’s TV advertising slogan, ‘we’re on your side’.

The song criticises the national mortgage provider and its CEO Graham Beale after Merv claims he was left £150,000 in debt in 2008 after his planned Celtic Roots music festival – featuring Van ‘the Man’ Morrison – was cancelled due to the area being a flood risk.

In the process of remortgaging his Lichfield home, Mervyn claims Nationwide offered him a mortgage with an unnecessarily-high interest rate of 5.5 per cent, instead of 1.75 per cent, leaving him financially crippled.

Nationwide denied the claims, saying it had gone ‘above and beyond’ in a bid to find a solution that helped both parties.

But after numerous negotiations with the mortgage lender ended unsuccessfully, Mervyn was evicted in November and his house was sold – but not before the determined musician barricaded himself in his attic for two weeks.

Speaking from the roundabout he is calling home this week, he said: “I wanted to prove a point. I’d offered them a solution and they did nothing.”

He later wrote the song 14 Days, 14 Nights, to commemorate his attic escapades.

The grandfather-to-be now has a order restricting him from crossing the boundary in to Nationwide’s headquarters. But he plans to sleep at the side of the road and is prepared to go the distance to get noticed by the lender.

“I will do this for as long as it takes for them to notice me, for them to give me my money back and let me live again,” he said.

The singer and bassist is now living in a shed behind his former property and relying on friends and family for support.

“My daughters are heartbroken and are trying to help me out,” he said.

“My daughter is 20-weeks pregnant and it is so sad that I’m not able to look forward to and enjoy that.”

A spokesman for Nationwide said the company had done all it could.

“This is a case where we have gone above and beyond what would be expected of a reasonable lender and have made numerous attempts to accommodate Mr Spence and to find a solution which works for him and for the society,” he said.

“We have shown significant forbearance over a long period of time and have tried to do our best for Mr Spence.

“We do, though, owe it to our wider membership to ensure that we do not sustain losses from such situations as this as, over time, this will affect the viability and sustainability of their building society.”