I am quite sure the RN doesn’t believe the primary theater for the QE would ever be in the North Atlantic. The QE‘s reason for being is to remind the US of the usefulness of Britain to the continued global hegemony of the US. So the QE would fight where the US would likely deem her own influence to be in need of forceful assertion. That would almost certainly never be in the North Atlantic In the next 30-40 years.As I understand it, the Indian Ocean is relatively calm compared to the North Atlantic, which makes the decision not to have a bulbous bow quite strange.
Queen Elizabeth class has a bulbous bow and I'm quite sure the RN hasn't forgotten about North Atlantic conditions.