Reso - Signed for an album for Civil Music, could be a possibility but his sound output is nothing like Hospital's.
Royalston - Not exclusively signed, formerly signed to Med School, possible.
Fred V & Grafix - As a duo it's unlikely, as the interview said one person. However, someone came up with the idea of doing what Gav Xample and Nick Lomax did and become a group i.e. Loadstar
S.P.Y - Possible considering the wordplay used. An album coming on Soul:r and (I think) a collab album with DJ Marky on Innersound among various other forthcoming releases may be a weighing point to not be signed.
Blokhe4d - They run Bad Taste and enjoy various successful releases, more or less.
N3GUS - Possible, not sure why though.