In reply to a post by candlerb:

In reply to a post by dect:

Have you asked the current owners what speeds they actually get on their broadband? it may be better or worse than you think.

If you know the phone number of the house - which you can get from the BT Phonebook if you know the surname and they're not ex-directory - then enter it at https://www.broadbandchecker.btwholesale.com and it will show you the *actual* speeds achieved recently under the heading "Observed Speeds".

Easier to use the Address option I think.

The address option for me doesn't give the observed speeds, I only get that by using the phone number.

Ah!

At the moment we are bumbling along at 4.5/0.6, at this speed we can have Zoom calls whilst still browsing internet, and stream youtube HD whilst still browsing internet, not sure if trying to Zoom and stream youtube HD would work fine, but gives you some idea that a couple of video calls, or video call and streaming HD should work OK at your predicted speeds. but as others have said shifting large files about might impact this. Also as others have said many (most?) properties are able to have a second line without problems, so if the property is ideal in all other respects then that is an option.