Doubt its that, you would expect tests to be repeatable if that were the case

And what would be the point of that? I would hope that the specified a pure data speedtest with no compression.

Which
169 ms download 23.5. Upload 9.5,,,
think BB
27ms download 20.4 .Upload 8.8...

One after the other when no on else is using network.

See how your neighbours compare and get tips on tackling slow broadband

5 mins later still waiting for the page to load Only did it to see if they were trying to sell a subscription to get the info....

Here's my proof that tester is tosh .... Just run, via wifi ....

Response time (latency)
64 ms
Download speed
87.1 Mbps
Upload speed
19.0

...The upload briefly showed 22 meg

Yours ....
DOWNLOAD
72.9 Mbps
tbbx1 70.4 Mbps

bursting to 73.9 Mbps

and 16.9 up.

Our friends at Speedtest.net ....

7 ms
DOWNLOAD
73.17 Mbps
UPLOAD
18.31 Mbps

Router stats .....

Data rate:
20.00 kbps / 80.00 kbps
Maximum data rate:
19999 / 103350
Noise margin:
23.5 / 12.9
Line attenuation:
9.9

Tried it the other day and got overoptimistic results.

Just tried again and got 500% higher latency, 10% higher download and 35% higher upload that the test I've just done using the tester on here.

The upload speed they quoted was 25Mbs or 25% greater that the maximum for my 80/20 service!

All tests done using desktop PC with 1Gbs network card connected directly to BT Smart Hub.

Seems a bit overoptimistic. 53/14 with 68ms latency, upload is only 11.5 sync.