Hi again Ralphy.... I think your statement... "Aircraft that are taking off always have the right of way". Is absolutely true, because...
To get into that state, they must have first given way to aircraft already on Final.
Also it is obvious that they have right of way over any aircraft or vehicle, wanting to cross, taxi or land on the runway. The right of way will change depending upon your position about the airfield, and the position of the other person.
If you operate from an uncontrolled airfield, there can be 4 aircraft in the circuit, you need to slot into this pattern seamlessly, and maintain your spacing, so that two aircraft are not on the runway at the same time.
The Lowest Common Denominator, which is what is required for PPL exams, would be an uncontrolled airfield without radios. Anything more is only relevant for the CPL exams, or for Red-Arrow type pilots.
.
.
ref.. CAA chapter xii (Sun-Loungers.), sub-section 3a (Beach-Towels, F.Os. for the use of.)
.