Plusnet and LLU

[#1]

I was just wondering why Plusnet use BT's network instead of LLU?
Is it as simple as cost, or is there something else?

[#2]

Cost, a lot of equipement

[#3]

And Plusnet are owned by BT....
B.

[#4]

For the record we used to provision some circuits on Tiscali LLU before our parents took us under their wing

[#5]

I thought it was something like that