I'm currently on 200Mb and thinking of dropping down to 100Mb. I notice that the upload speed drops to 10Mb when doing so. I was wondering if it's possible for Virgin to provide 20Mb upload on 100Mb plan or is it a technical limitation?
I notice you are with BT what minimum download speed were you guaranteed? Their Fibre 2 package in my area is a minimum of 42Mb but the range is 50-71Mb quite a variation and I suppose that would be more or less the same with the other providers since they use Openreach.