I have swapped my Virgin Media Cable service to EE Broadband's Fibre 1 (G.Fast) service, which is up to about 140mbps via the BT Network (certain areas only I believe).
So far I very pleased with an actual download speed of 130.9 mbps (max), even though I am about 335m from my local cabinet.
I installed the BT ZTLink MT992 Modem myself, linking to a Asus Wi-Fi Router.
the only problem I had was porting my landline from VM to EE, but the main problem was VM's, not releasing the number.
Time With Provider: 4 Weeks
Package Name: Fibre 1 (G.Fast)