Shark teeth from Gault Clay (Albian) ID?

[Geodude]

Hey all,

 

Here are four teeth from the Gault Formation, Albian stage of Folkstone, Kent, UK.

 

Am I correct that the left two teeth are Dwardius siversoni?

 

The right two teeth have somewhat relatively bigger cusplets and they are more round.

Could they be Dwardius or possible Cretoxyrhina sp.?

I noticed that the book chapter of Ward (2010), https://www.researchgate.net/publication/280316422_Chapter_21_Sharks_and_Rays, also mentions Cretoxyrhina aff. vraconensis from the formation.

Any thoughts?

If you need better pictures, just let me know.