If you mean the tbb speed test results, then no, because loads of them are junk.
At least half of the ones from my own line in the last twelve months are garbage - hideously low for whatever reason. The reason always being down to something I have done that screwed it.
I have a friend three houses away on Sky LLU. He was getting 320kbps, detected by me when I was there and using it, and had been doing so for a year - since they moved in. I had a look at his wiring and it was way beyond my fixing it, with two NTE5s, burglar alarm wires in places, and a jumble of wires and joins stuffed into a gap between an added-in porch structure and he outside wall of the house.
He got a BT engineer in from Sky, free of charge, sorted! Over 5Mbps now, as it should be.
I can see 9 speed tests for my postcode. Three are Sky tests by me. Two are MASF and clearly weird/invalid, three are VM cable by the look of them and shouldn't be showing, one is Plusnet but isn't me and clearly has a major problem, and none of mine appear for some reason. Mine being the only ones that include valid results

.
As I look closer to the exchange I see various hideous results, such as a single Infinity 46.18/4.43, TalkTalk something at 1.7/0.81, closer still Plusnet at 42.42/13.83 (much closer than me getting
this here and now).
My broadband basic info/help site - www.robertos.me.uk |
Domains,site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 59.4/14.4Mbps @ 600m. -
BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.