It's likely a waste of time putting up a ladder to look at it, as anything wrong here will need to be rectified by BT/Openreach.

I am interested in seeing does the line go into the loftspace for example?

The cable that comes through the window that the orange and white cores are visible in the photo should be the end of the drop wire from the pole.

It does not scream out drop cable to me, where drop cable is usually black. It could just be painted overtime.

It would be best if a new master socket could be installed at this point, then new internal cable installed direct to a new socket where the router lives.

I am not even sure if this is the correct entry point personally, the colours here do not seem to match with the master in the same way the old junction box seems too...

What seems logical is not always the correct answer with BT lines.

I wonder if that�s �downlead� feeding into the first newer connection box ? Same two pair and colours as old DW10, exterior grade as well.

There was a brief mention elsewhere from the OP of a repair done after the windows had been replaced by double glazing ... it might be part of that ?

The second connection point, a BT78 looks dubious to me. They are prone ( when poorly sited ) to corrosion on the rear metal connecting strips, also it looks too �busy�, too many ends for just one in, one out.

Well, I did this morning what should have done a week ago. Had a good look at the outside cabling.
The outside and inside that we've talked about all look fine. BUT - there's a junction box high up outside that could be dodgy.

First, to clear up previous questions - here's a better pic of the wires inside the junction box at the window. https://ibb.co/sb2GyHr
The solid orange and white wires go through the window frame and outside. It seems this was only done a couple of months ago, and the guy says this was done by "Openreach" - seemingly he phoned them himself and they came out and did it for free. He's adamant about that.

Inside the old BT78 connection point is this : https://ibb.co/5BgtBN1
There's no damp. It's in the middle of the house. I've physically traced the cable coming from the window, and the other going to the phone socket.

So, the new bit is this : https://ibb.co/LCZR8qH
High up outside where I couldn't quite get to : https://ibb.co/9bX6Z3j

I suppose it could be nice and solid inside. But does anyone have any experience of these boxes ?

Thanks to all for help so far.

That�s a 17A up at the eaves, long since superceded. Inside will be more gel crimps.
Looks like it�s not entirely waterproof anymore. Should be OK.

That the 78 looks clean, but theres metal contacts across the back connecting the opposing IDC connectors, that�s where the corrosion often starts. The good news is that it�s a pair in and a pair out.