Excellent news - it's now been two days since my DLM reset (which removed my banding and G.INP) - I'm pleased to confirm that G.INP has been re-activated at some point today!
Current download sync speed = 35938kbps! Highest I've ever had on my line
I'm extremely happy with this result, as I explained earlier in the thread, my line had been banded at 27400kbps ever since migrating from Sky FTTC to BT retail. Note it was banded even after G.INP was enabled on my line many weeks ago, which meant my line was running at 10-11DB SNR. DLM just didn't want to remove the banding.
Here are my current stats:
Many thanks to all helped me reach this result, as you can probably tell I'm rather chuffed it all worked out well in the end