BY day he is a friendly electrician for Marks & Spencer but by night he thrashes out guitar riffs in a brutal and uncompromising death metal band.
Ryan Jardine and his bandmates may not play the sort of music likely to land them chart success but within the world of heavy metal they are making waves.
Subservience shot the video for their latest track "No Messiah" at Dormans Youth Arts Centre in Gossops Green
Subservience have been added to the line-up for this year's Download, the UK's biggest metal festival, and will be playing alongside the likes of heavy metal gods Iron Maiden and nu-metal royalty Slipknot.
Ryan, 31, of Denchers Plat, Langley Green, formed the band with friend Scott Bishop, of Fairway in Ifield, after they met working as electricians during the construction of Heathrow's Terminal 5.
He now works as an electrician at the Crawley Marks & Spencer store, and a computer administrator and a project co-ordinator also play in the band.
Ryan said: "We all work full time and have got pretty normal jobs. We can't sit around playing guitar all the time as we would like, so I have to be nice as pie and presentable at work. People say I don't look like I'm in a death metal band."
As well as guitarist Ryan and bassist Scott, the band is made up of Jay Fitt, 24, from Brighton, on vocals, Martin Shouler, 33, of Creasy's Drive, Broadfield, on guitar, and Tom Newland, 24, from Burgess Hill, on drums.
The band describe their music as "a corrosive blend of unrelenting extremity".
Jay recently ruptured his vocal chords during a gig – so no longer performs unprepared.
Ryan explained: "He now warms up before each gig, starting with a few growls and screams. You know when he's warming up because it sounds like someone is being murdered."
You would expect most parents to dismiss their music as "a load of noise", but Ryan's mum and dad, who are in their 60s, have been to some of their gigs and although his mum admitted it "wasn't her cup of tea" they have always been supportive.
Ryan said: "My parents bought me my first guitar. They bought me a cheap one because I think they expected me to try it for a while but then give up. They've been to some of our gigs. My dad loved it and Jay's dad got in the mosh pit at one of our gigs."
Subservience recorded a video for their recent song No Messiah at Dormans Youth Arts Centre in Gossops Green.
Their track Exit Wounds featured on a free CD on the front of Metal Hammer magazine earlier this year and that led to them being asked to play at the Download Festival.
On June 13 they will play in the festival's 2,000-capacity Doghouse Tent, which will be their biggest gig to date.
They will have just 30 minutes to make their mark on the audience.
Ryan promised to make the most of the opportunity. He joked: "We are going to go out there and tear it up and maybe burst a few eardrums."