Bigga fish and the Roundhouse in camden town are doing a free gig with the likes of wiley,ironik and more for people aged between 15-24 for FREE, well kinda free they just want your PEE i no it sounds stranged but its also in joint with the NHS and they trying to get people to do a chlamydia test.
for doing the test you get a ticket for the event on the 27th of march or you can opt for a £10 hmv voucher.
you can find out some off the info in the link http://www.biggafish.com/
i think this is more of info than anything but a free gig or a free £10 off voucher seens like a good deal to me
you have to be aged 15-24 and ether live in LBO Camden or just give them an address in camden for then to send the ticket to also you have to do the test before the night i will try and but up the flyer.