Britain's Got Talent final 2015: who are the finalists and how did they get there?

We now know all the finalists for Britain's Got Talent 2015 well, except for the wild cards). But how did they get there, and what are their chances? TO READ PROFILES OF THE FINALISTS CLICK ON THEIR NAME: WHICH ACTS ARE IN THE FINAL? Côr Glanaethwy (Choir) Entity Allstars (Dance group) Jules O’Dwyer & Matisse (Dog routine) Old Men Grooving (Dance group) Jamie Raven (Magician) UDI (Siberian dance troupe) Isaac Waddington (15-year-old singer/pianist) The Neales (singing father and son group) Calum Scott Danny Post
hill Judges' wildcard Public wildcard