Hello. The red valve did turn much easier than the others.
A BG engineer came out (trying to sell her a combi boiler, they did a free "check" on the current system to see if it needed covering with their home plan thingy or replacing) pointed out the flue wasn't installed properly "but was not unsafe" which is what he said to my sister. Mind you the BG engineer never said anything about the 6mm earth bond to the gas meter/water stop tap either.
The whole thing was signed off too! it even says there is a 10mm to the gas meter, I trained as a sparky for 4 years (unemployed atm) I know the difference between 6mm and 10mm cables.
Tomorrow is payday for my sister so we are going to do the sentinel clean procedure anyway as I'm sure its recommended (if the flue is frightening then there may be nothing in the system to prevent scaling.
