Did you receive the Hub 4 as it is needed for 1GB Tier.
Also do a direct wired speed test at www.samknows.com/realspeed
If on Windows, try using "Safe Mode with Networking Support". This will eliminate any software that may be causing a problem with the speed test.
You could also try a 60 second factory pinhole reset as below.
Remove any ethernet cables from the Hub and hold the pinhole reset switch for 60 seconds. Do NOT reboot the Hub, just let it do it's thing. Note you will need the passwords from the bottom of the Hub afterwards, so make sure they are legible.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks