I need help depicting a ratio decedendi on the case of R.H.M Bakeries (Scotland) Limited v Strathclyde Regional Council 1985 S.C. (H.L.) 17 based on the comments of Lord Wheatly and Lord Robertson.

The extract of this case that was given to us focused mainly on the concept of nuisance in common law and referenced Tontine Hotel (Greenock) Ltd. v. Greenock Corporation. There was a heavy focus on section 2 of the Sewerage (Scotland) Act 1968. There was nothing on good faith in the extract. Could you give a ratio decidendi based on the concept of nuisance and statutory duty?