Unlike some here I haven't bombarded ntl cs with multiple calls for the 10MB upgrade. I called once on the 8th and was told it was a trial and for new customers only. I wasn't happy as I'd read on here that people already had 10MB and I told ntl that I'd been a customer for 15 years and it wasn't right that new customers or customers on lower tiers got preferntial treatment. Still the answer was no.
Well, I've been pretty patient and I've read the comments on here re the older modems. I have a armbit120 and got the new firmware today. To cut the story short, phoned ntl cs today asked if my area, Romford could get the new 10MB speeds. After 1 minute of checking, the nice lady said yes and was done straight away.
Considering its peak time, I'm getting on average around 5MB. Well worth the 2nd phone call.
Edit: now around 8mb
Not bad for a "trial".