Cable speed tests in an ADSL post...chalk and cheese guys
ADSL speed determined by line length from exchange and quality
Cable determined by cabinet subscription and not usually affect by line length.
If your getting slow ADSL speed check your line length and attenuation, there is no point
Blaming your provider who ever it is until you understand how ADSL works.
There's plenty of sites you can put this info into to determine you estimated speed.
also check internal setup.
Closer = faster
0 - 1mile - headline-16mb
1 - 2m - 16-10mb
2 - 3m - etc etc
Unless your on the sky connect package, I personally find their unlimited package good value for money, £7 50 for
no download limit and no speed throttling, just my opinion though.