Update.
For anyone thinking of going down this route then my advice is to ignore a lot of the advice given and just get on with it.
The addition of a simple speed sensor on the rear wheel and pairing with your watch gives me all the information I wanted....time, distance, MPH, heart rate. (You can attach and pair a cadence sensor as well if you require). This information is then automatically sent to Connect / Strava at the end of your session.
So it would appear a dumb trainer can me made smart enough for someone who just wants the information and who doesn't want the videos / subscription.
Over and out.
Good for you