Thanks for all the replies and concern...it's much appreciated.

We took her in yesterday morning first thing and left her until 15:30 getting some more IV fluids. The vet suggested putting her on Enalapril Maleate (another ACE inhibitor....she was on Fortekor), she suggested that this may give her kidneys a bit of encouragement and hopefully get her Anaemia sorted out (apparently Anaemia also makes them lethargic and puts them off eating...coupled with the CRF it's got make matters significantly worse).

I went armed with a list of things I have learned through my hours and hours of research to throw at the vet...and to give her her due, she seemed to know her stuff (she actually answered a lot of what I was going to ask before I had the chance to ask)

She also said her hydration level wasn't that bad....but agreed it wouldn't do any harm having another go.

The vet also confirmed that both kidneys are enlarged and irregular (Polycystic Kidney Diesease...or PKD). This has been the cause of her CRF.

Anyhow, went to pick her up and they hadn't done the bloods...they asked us to come back in a few days as it would be better for the fluids to work first....I then asked about the Enalapril and they told me they had only had 'dog size' pills and had to order it in! I actually called today and they had come in so I picked them up and cancelled the bloods for Wednesday. Too be honest, we know what she has and what caused it...we know she is also anaemic, so we decided it is not worth the stress for what could only be bad news.

When we brought her home she ate a small amount and walked away....we got her to lap at some Tuna Spring Water (which we had mixed in a bit of pastey meat)....she has since turned her nose up at food.
We have elected to syringe feed her, to try and get some nutrition and calories in her and perhaps get her strength up (in hope she then may have the energy and appetence). It was difficult at first and soul destroying (she fell out with us last night and it was obvious). We have pretty much done the same today and it is getting easier....she will be getting a bit more tonight too.

I've also ordered some KD-hills minced chicken tins to see if they are more appetising. Also, I've ordered some Ipakitine Phosphate Binders, so we can perhaps tempt her with a little of her regular cat food to get her weight up and reduce the risk of the nasty stuff being directed to the kidneys.

She is urinating 2-3 times a day and doesn't wake to go through the night....I was up for work at 05:30 this morning and she didn't budge....so I took her to the bath (she is not going out in the dark and we don't want her to eat any litter) and she did a big wee, then went for a drink and back to bed until Leanne got up with her @ 08:30.

Last night she also strained out some poo! It was like small hard conkers....it took some straining and a few squeaks! But hopefully it feels better for her.

Anyhow....back to the nightmare