Are the owners in Colliers Farm the same owners who were there 20 years ago?
You have to have consent. You cannot go ahead without. It says you can’t alter the line of the outer walls or roofs except with consent of next door. It says that consent may be refused if any extension to the property does not have obscured glass on the northern side. So you must have consent.
However there is no mention of consent not to be unreasonably withheld or delayed and hence, whilst it says that you can’t go ahead without consent, they can refuse for whatever reason they like although it does actually state that consent may be refused if it doesn’t have obscured glass. They can refuse for other reasons, even unreasonable ones.
If you proceed without consent, and they take exception to it, they can apply to court for an injunction to stop the work.
Can I clarify anything for you?