[BenMcr]

There are two different 100Mbit tiers.

'100' was the one that was introduced as part of the 100Mbit rollout. This was sold up till the beginning of March for existing customers and cost more than XXL 50. This has a 10Mbit upload

From that point onwards existing customers wanting 100Mbit as an upgrade or part of a Collection get XXL 100. This has a 5Mbit upload as it's XXL with the downstream doubled from 50 to 100Mbit

The reason for this is I would expect is to help manage upstream capacity in each area