********* £28 QUIDCO ALSO AVAILABLE ********
If you're in the right area, Plusnets Value package is likely to be the cheapest option. It usually costs £5.99/month on a 12 month contract but until 31st March it's possible to get 4 months free, bringing the effective cost down to £4/month.
To get this deal, you have to go via the link and enter code '4monthsBB' in to the box on the checkout page. If you don't use the code or the special link you won't get it, so be careful when ordering.
The package has a 10GB monthly download & upload limit, but this is only enforced in the daytime hours; you get unlimited downloads from Midnight to 8am. Go over the daytime allowance and it'll cost you £2 for 2GB.
Get 10mb broadband for a year for under £20
£5.99 x 8 months = £47.92
- £28 quidco = £19.92
Even without quidco it will only cost £3.98 @ month given the 4 free months