ShyTorque
Separation in class D? You need to look up your Air Law, mate! Separation is given in class D airspace only between aircraft flying IFR. That is why it is easier to get clearance across Luton zone VFR than IFR, as I have occasionally found.
You are right that it is safer, and they will give you traffic information if they can, but you are still "see and avoid"!