The story so far...
Last week I transferred the keg and bottles to my fermetation fridge at 20c in the hope it would get rid of sickliness i guessed was diacetyl. Transferred back to keg fridge after maybe 7 days, and tasted after about 24 and still horrible, that's when I started this thread.
Update:
Well I just tested a bottle and a keg sample - not yet done any buggering about with them yet like repitching.
It's got MUCH better in the last few days in the keg fridge. Not sure why as I expected the higher temperature to either fix the problem while at 20c or not fix at all, I didn't expect days in the cold to improve it, but it seems to have.
90% of the sickliness has gone and it's definitely drinkable now - not professional quality but it's ok.
It's still got a heavy body - maybe a bit too thick so maybe I mashed a bit too high?
It's also got a slight honey taste which I guess from reading is pentanedione - is this likely to reduce with time in the keg fridge or should I raise the temperature again?
It's currently sat at about 8c which is how I server ales, I'll drop it to 2c when this lager come right.
I think I may have been saved by the fact the lagering temp had to be 8c to match my ale serving temp - I know that's too high, but maybe that stopped the yeast falling out and snoozing off?