I would suggest the freeholder simply say that consent has been given (even if its not!) and just go ahead. Mr S-O can then take it up later if he likes. Which I doubt he will. Also, was thinking could you get your local councillor involved? S/he may know other measures to take, or at least be on 'your' side in dealing with Waltham Forest?

Very pleased to hear about the sensible decison re. the drug dosage. The fact you are now awake when you should be speaks for itself!

PS: if you ever need to escape the smell, don't hesitate but just grab the keys and head on down, if I'm there or not. You know where the teabags are....