Does anybody have any experience with Vodafone 4g Broadband Backup? A neighbour mentioned it and it sounds just what I'm looking for as a second connection. I'm currently with Zen Internet who are great but the speed in my area of West London is only around 50-55 Mbps. We're fairly heavy users and really need to have access at all times. I tried Virgin (again) only to find they were much as they were when we left them a few years back. So we pulled out of that deal. Assuming that any other ISPs are going to be using the BT infrastructure and so run the risk of being down when Zen are down, I'm getting stumped for ideas.