If I've got insurance as part of my ETA insurance (details here, but includes £1m third party insurance and personal accident cover up to £20k) do you reckon I don't have to pay the £2?
Short story: You'll still need to pay it.
Long story:
Audax UK, CTC or BC membership only to avoid the £2 extra.
Audax UK doesn't have enough time/people to research every single insurance policy to work out whether it provides adequate coverage. If you turn out not to be fully covered (to the level that is required) then the liability could shift to the organiser.
So, easier than that, they stick to the 3 memberships where they know the insurance is good enough.
Short story: You'll still need to pay it.
Long story:
Audax UK, CTC or BC membership only to avoid the £2 extra.
Audax UK doesn't have enough time/people to research every single insurance policy to work out whether it provides adequate coverage. If you turn out not to be fully covered (to the level that is required) then the liability could shift to the organiser.
So, easier than that, they stick to the 3 memberships where they know the insurance is good enough.