In R (MP) v SoS for Health and Social Care (2018) EWHC 3392 (Admin) Lewis J said:-
64. … If a public body chooses to consult upon a particular proposal, then it must do fairly and in accordance with well-established principles. If a public body chooses to consult on one set of proposals, but not to consult on another, different set of proposals, then, unless it can be shown that there is a legal obligation to consult upon the second set of proposals, it is not obliged to do so because it is consulting on the first set of proposals. …
65. The fact that the defendant chose to consult upon a very large number of proposals … does not alter the position. The two issues upon which he chose not to consult … were discrete, self-contained issues. The fact that notice of the decision to make those two changes was contained in the document setting out the response to the consultation exercise does not mean that the proposals were part of, or were linked in some way to the proposals that were consulted upon. The defendant did not fail to carry out the consultation exercise properly. The key question, therefore, is whether there was an obligation to consult upon these two changes. Read more »