From my brief career in telephone market reseach
(I lasted an hour after being told countless times to 'Fuck off') TPS only bars sales calls. Those timesharey dealys and market reseach calls are A OKAY
( Blue Star was working part time at the 5 and Dime, Mon 22 Sep 2008, 10:25, archived)

It also only bars calls made from within the UK.

( Lord Gnome, Mon 22 Sep 2008, 10:27, archived)