first thing to give virgin a ring on 151 and ask if your power levels on the modem is ok as that graph don't look healthy compared to mine here (On 50Mb) http://www.thinkbroadband.com/ping/share-large/dbbc1...
If they say everything Ok then i personally would go to the leave team and tell them your not happy with the service your getting.
Also give the Virgin Media forums ago too http://community.virginmedia.com/t5/Speed/bd-p/Speed
see if anyone eles is facing the same issues.
Virgin Media 50Mb/3Mb Broadband, Tivo M+ TV package
1.1mi distance to Mill Hill Exchange, Previously FTTC with Sky LLU synced @ 66/15
Edited by francisuk25 (Wed 18-May-16 02:45:42)