Soil pipe problem

[Tryinghard]

Just digging out side pathway and discovered big gap to waste drain !!! The soil and vent above ground are new .
Can anyone advise please what extension soil / stack pipe I need

 

[Aquarius]

Probably one of these, McAlpine doesn’t appear to state it’s not permissible underground:
McAlpine DC1-BL Drain Connector Black 110mm - https://www.NoLinkingToThis/p/mcalpine-dc1-bl-drain-connector-black-110mm/4255V?tc=TA8&ds_kid=92700055281954505&ds_rl=1249404&gclid=Cj0KCQjwp86EBhD7ARIsAFkgakimgaxhTGG88BeGgZ9r-n_AJ-w9ssg64H44HND6JZfvUCfR2utqhIMaAgQmEALw_wcB&gclsrc=aw.ds and a short length of soil pipe with a slip coupling.

 

[ShaunCorbs]

He’s got one on so bit of
Pipe and a couple needed