Get ip-transit from a provider that is peering with tier2s in the uk. I'm seeing problems with tier1s again and again: they have a great global network but they won't reach most of the end users on a direct way since they are only peering with other tier1s. The route will always go trough a tier1 then a tier1's customer and then to the destination which is rather indirect. Tier2 usually have better connectivity and are exchanging traffic with other tier2s on more places than just one per country as tier1s are usually doing. Peering at linx might also be a good idea but don't forget that only a few networks are going to peer with you if you are a small player... The best mix one can get for ip-transit always is a combination of tier1s and in addition to them tier2s who are serving the geographic region where your targets (mostly eyeballs I guess) are. Good tier2s in Europe are Lambdanet and Telia* for example. Telia is selling transit services in the US as far as I know so this might be the best option. Gunther * = Telia is something between a tier1 and a tier2 if you ask me. Okay they are buying transit from spring or something like that but what I'm aiming at is that they are peering with most European end user networks.