
Plusnet are offering 12 months half price on Extra Broadband packages when you sign up for one of their phone deals. Prices are from £5.74 a month:
Plusnet Extra with Home Phone Evenings & Weekends
Plusnet Extra with Home Phone Anytime
Line rental of £11.99 is required for both packages. Evening and Weekends call plan included as standard, Anytime call plan costs £3.50 per month.