I have just been told they are cooking the meal. Hmm, since it'll be me who clears up regardless, shouldnt worry, but.......
Because it's not been cold today, we allowed the heating to come on at the scheduled time & yep, whistling again, just as this morning & yesterday..... Have showed OH the advice Norm2 gave me. OH not impressed.
Well have told him to get in touch with big chief at company, since he, OH, was happy to takeover/muscle in on all the arrangements before when it wouldnt be him, OH, who was going to be inconvenienced. 
Somehow this is going to be down to me I think, later in week when am around to make a call, after I'ved nagged OH to no avail & started WW3!
J.