Maybe these were already posted on the site and I just didn't notice them before. But here are the London-Paris redemption rates:
Adult Standard return
9,000 Avios
6,000 Avios + £30
3,000 Avios + £50
Child Standard return
8,500 Avios
5,000 Avios + £20
2,500 Avios + £40
Adult Standard Premier return
26,500 Avios
16,000 Avios + £70
8,500 Avios + £120
Child Standard Premier return
20,500 Avios
12,000 Avios + £60
6,500 Avios + £90
Examples are starting prices and are subject to availability. Exclusions may apply.