There are at least 2 bands/artists with the name Vamps:
1) VAMPS is a Japanese rock unit by Hyde (lead vocalist of L'Arc~en~Ciel) and K.A.Z (guitarist of Oblivion Dust, hide with Spread Beaver and Spin Aqua). HYDE and K.A.Z have been working together since HYDE's third solo album FAITH, which was released in 2006. In early spring 2008, they announced the name-change for HYDE's solo project - and officially formed a band. One of the reasons being to give more credit to K.A.Z for his work. Thus VAMPS was born.
2) The Vamps are a British pop band formed in 2012. The band consists of Bradley William Simpson from Birmingham (lead vocals and rhythm guitar), James Daniel McVey from Bournemouth (vocals and guitar), Connor Samuel John Ball from Birmingham (vocals and bass guitar), and Tristan Oliver Vance Evans from Exeter, (vocals and drums). They signed to Mercury Records in late 2012. The band started to grow a fan base by supporting pop punk band McFly in early 2013 on their Memory Lane Tour. They have also been performing at several festival style events around the UK as supporting acts for several different acts including The Wanted, JLS and Little Mix, Lawson. The Vamps released their debut EP on 29 September 2013. They will also be releasing a full album in 2014. They gained further recognition in September 2013, as they supported Selena Gomez on her Stars Dance Tour at London's Hammersmith Apollo on 7 and 8 September 2013.