There is a Technicolor TG589vn - are you saying it will only work for ADSL?

The only point that actually jumps out is the attenuation and speed. If the DS atten is correct, then with the 6.2dB margin (SNR) the speed is correct - which points to a very noisy environment and if others close by are seeing similar speeds then there may be a localised noise source causing teh problems and very little you can do.

The graphs can give pointers to where problems may lie.

Can you borrow an HG612? (or buy a cheap one) to get additional stats and graphs?

Yeah, DSLStats will only work for ADSL/ADSL2 on this modem. You can check on this page - http://www.s446074245.websitehome.co.uk/routers.html

Note 2: TG589vn is VDSL2 capable, but DSLstats doesn't support it fully in VDSL2 mode.

Also, if you go to TBB BB Map and type in Yatton as town name, you'll see that all speed tests south of the station (where I am) never go above 40Mbit, though there are a few north of town that do. Either the lines here are extremely noisy or the cabinet doesn't support above 40Mbit speeds (is that still the case in certain places?)

By the way, I also have a BT HH v3 from the previous house owner if you think that's worth a try?

All fttc cabinets support the 80/20 product just your distance from it being the deciding factor mainly

"Does not support fully" - can you try it and see what it does give.

All cabinets should support 80Mb - I don't know of any reason why any would be restricted.

How for to your cabinet - as the crow flies and by road.

That was my initial thought - however 17dB should be giving a lot better than high 30s.

I did - it just says "No data returned for last sample" or something along those lines.

I don't know where my cabinet is. All I know is that that's Cabinet P4 in Yatton but I haven't seen near by. Any way to find out? It's all underground cabling here, nothing is coming over the poles.

Walk or drive around ... either physically or on Google Maps. Start with: https://www.telecom-tariffs.co.uk/codelook.htm?xid=2... which gives a good approximation, then home in on it.

Here's cab 3:

https://www.google.co.uk/maps/@51.3840107,-2.8130715...

I would guess cab 4 is not too far away but you'd have to look around to find it. Your exchange is to the SE off Wood Hill Road.

Cab3 is quite a distance from me. Certainly more than a mile. Cab4 seems to cover a good bit of town and I am on the edge of it... which suggests that it is a bit of a distance. Need to hunt for it.