The risk of harm for obvious risk purposes must be characterised at the same level of generality as for breach of duty, and the obvious risk assessment must be from the perspective of a reasonable person exercising care for their own safety — not from the perspective of the plaintiff as they actually behaved.
The full text is available to signed-in members, including the 4 later cases that cite this judgment.
2 of the 4 citing cases carry a classified treatment. How each court treated it is available to signed-in members.