The company I worked for was Gill Sales Development in Glasgow.
It really was the worst job ever. Start at noon, work until 9pm going door to door. Then drive home, phone the boss with the day's numbers, get a roasting over the phone that ran to about 11 pm, then off to bed. And if you didn't hit your targets during the week, they expected you out there at the weekends. They initially paid (if I remember right) £30 for signing someone up to the electricity and £8 for the phones. Then they changed it to £300 a week, but they deducted money off you if you missed your targets. Strangely, for someone like me who was pish, I made more money this way.
I lasted 4 weeks.