Thanks for the help people. Sorry for the dumb questions, colour processing is something I am still relatively new to (~8 months experience.)

My bathroom is presently pretty cold, mostly because the heater in it packed in a few weeks ago and is awaiting replacement, and it's just very cold here at the moment

I will try to:

  • Test the expose a strip in the light and then develop to see what happens
  • Create a water bath that I will maintain at no lower than 20degC

I don't think it can be the developer that's bad as the test strip apart from the short blix time, seemed to be otherwise fine.

I am using the Replenisher RT solutions, it just seems to have a slightly different name in the UK of Replenisher RT/LU.

I will have another go tonight when I will have more time to hand to really work at this.