3. Where any street is stopped up under article 10 (construction of new and stopping up of existing streets), any specified undertaker whose apparatus is in the street has the same powers and rights in respect of that apparatus as it enjoyed immediately before the stopping up, but nothing in this paragraph affects any right of the promoter or of the specified undertaker to require the removal of that apparatus under paragraph 8 or the power of the promoter to carry out works under paragraphs 20 to 29.