First can you try the “free & automated” Service Status number - 0800 561 0061 - which usually tells you of more local issues down to postcode level. That will say if there IS a known fault.
If not, the first question as always is... are these issues only evident on wifi connections or do you see them at the same times on devices connected on ethernet cables? If you don't know, can you check to help diagnose whether it is just a wifi issue or it could be network connection related?
And what are the various Hub lights showing/doing when this happens?
--------------------
John
--------------------
I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.