Possibility of caps on the ntl services.
CableForum.co.uk has details that suggests that the new speed tiers to be introduced by ntl in the New Year may have bandwidth caps on them.
ntl has had some degree of capping on its existing products, but these have been generally guidelines, that are not heavily enforced. It is not clear how hard a limit the new caps will be, or if this is just rumour. The process of charging £25 for the upgrade, is an interesting move, and ensures that no-one could upgrade to the new package, without in theory having read the new terms and conditions.