Where in the SE are you Ernie, being FIV and older goes against Ben but with enough time, the right person will come along. I homechecked a lovely woman in Whitstable yesterday who is happy to take on older/FIV cats so they do exist, they just take a bit longer. Its worth speaking to local rescues soon but make sure you check their FIV policy as some either won't take them or PTS - most CP branches will rehome.