Post deleted by tommy45

I think you may be a little off beam, with the "throttling" comment.
There are so many variables - which dictate your speeds: what may have been fine some time ago may have changed - poor line connections/corrosion in external joints/water ingress. Too many to name, really. I suggest that you get on BT's case and get them to check your line again. You've not changed anything indoors, have you?
I've been a BT customer for years - with minimal problems, mainly admin.
I've been on 80/20 since it was available - years ago - and my speeds don't deviate much from 60/18 to 64/18.5.
I think I'd look elsewhere, rather than rant about throttling/beware!

I had similar issues that my line speed dropped from 8Mb to 2Mb.

I had to call BT multiple times and they sent a BT Openreach engineer, who said the line test showed no issues

Then BT did some reset on their backbone and it is now fixed.

It did take them two weeks to sort out.

That might have been a stuck IP profile, a more common thing in the older days of ADSL

In reply to a post by Paul2345:

It is practically impossible to get through to anyone who understands the issue at BT,

Plainly it is you who is not understanding the issue.

I think that's a little unfair. The OP conclusions maybe flawed, but they appear to have an issue that their SP should be helping to investigate and resolve.

In reply to a post by Paul2345:

Another thing they keep doing is reducing the acceptable speed value, which pretty much confirms my original point. When we started with this connection we were told to expect at least 45 and then it was 38.. and now it's 25?? If that is not deliberate then I don't know what is.

I suppose next year it will be down to 20mbps that will be considered "GOOD" and it will not be because of BT profits of course....

As you have already been told, this is simply how the technology works. Its annoying, but there is nothing ANYONE can do about it, except roll out REAL fibre.

The target figures change because they originally were best case scenarios but now they adjust them according to real-world results, so they are more realistic.

Looking at your line stats, it looks like they have had a temporary error that caused it to connect at a slower speed. This may restore by rebooting the router, or it may be more serious and have become stuck.

I appreciate your frustration, your ISP should really be helping you sort this out and in that sense you are right to be frustrated. But they haven't "deliberately" made your connection worse, it is of no benefit to them to do that.

Quite possibly, but ranting like this

Therefore, I can only conclude, that BT are artificially throttling our bandwidth in order to squeeze more people onto the same capacity at the exchange, to extract MORE PROFIT, at the expense of the customers, while also INCREASING THE PRICE EACH YEAR!

Our line has been PROVEN to be capable of more than 25mbps as we had over 40mbps FOR YEARS.

So, keep giving us less than our line is capable of, increase the price, and lie.

That is BT, and people should be warned!

isn't the way to solve the issue.

Have BT, and/or OpenReach engineers been out to you to check your installation and their connections? I had a similar but less drastic problem with FTTC a year or two ago. when my download speed dropped a few Mbs from about 38Mbs after an 'update'. To cut a long story short, they ultimately found a problem in the local cabinet and another in the local exchange and, in addition, they provided a new box where the copper enters my house. End result was download speeds around 46 to 48 MBs. ( I did have to risk a charge for an engineer's visit but the BT web-site test sequences did originally suggest a problem existed which needed an engineer's visit.)