As far as Virgin new customer offers go Ultimate Volt is their best one. It comes bundled with a £25pm unlimited O2 sim which can easily be cancelled with O2 or changed to another mobile contract under the 14 day cooling off period, retaining only the Virgin aspects of the deal and significantly reducing the monthly cost.
Several times a year they run a promotion for a few days where the deal comes with an additional £200 bill credit or a free 43" LG 4K TV. The telly whilst not from Curry's is usually the same model they sell at that price. Although some have had issues with delivery so bill credit potentially more appealing, especially if it can be applied straight away.
A quick internet search shows how often this deal comes around, as the tabloids tend to plug it with the kind of enthusiasm and free publicity most privately owned businesses could only dream of! Although in the light of the bill hike letters only just going out they may choose to hold off for a short while as not to rile existing customers too much.
Last month whilst the offer was on it was also reduced from £60pm to £54pm and for that you got: 1 Gbp/s Fibre, unlimited calls from a landline, TV 360 box, (wired) Multiroom box, full TV package in HD including Sky Movies, Sky Sports and BT Sport Ultimate and choice of £200 credit / 43" LG TV.