Mind you I am an IT Engineer with unusual internet requirements and this review probably isn't suited for the average consumer.

Where I live I can get Openreach FTTC at 80/20, or Virgin Media HFC.

I've been using Plusnet which gives me pretty much the full line speed, but it is starting to struggle when I'm trying to stream 4K content over the internet. That's why I thought I sign up for VM hoping to benefit from their faster internet speed.

I was issued a VM Hub 3.0, which I'm using in modem mode, along with my home router RB3011.

Blocked services:
I have a L2TP VPN server in the home network so I can remotely access resources at home. Turns out Virgin Media filters out several UDP ports (including those used by L2TP), this behaviour was discussed on VM forum but not acknowledged by VM. Also, this is not documented in the ISP KFI document issued by VM.

Speed:
Artificial test shows roughly 385 / 21.
HTTP download tests from third party sites appears to be traffice shaped - sustained speed at 200Mbps, with bursts to 400Mbps. The raising and falling edge is too sharp for me to consider it being traffic on internet. VM appears to be still traffic shaping although claiming not to.

Bottom line: VM is blocking ports (verified) / shaping traffic (?) but they claim to be not doing it. Questionable business practice. Will be cancelling within cool off period.