Dear Essex,
What I should more accurately have said, is that the prob. could be between the BT broadband system (local/regional), the local/regional I.Net condits., the Utube system, and the ISP loading... and, the PC power and progs. used of course.
With me here, it is distinctly local/regional loading that causes the irritation, and it is clearly peak/off-peak related -with occasional variance. Peak time loading is however one of the main causes of slowness in areas outside of high speed areas.
I am no IT tech. or buff, just what I have learned from conversations with someone locally who is a tech. - who keeps my PC in good order.
Regards, Bernard