Telewest has joined fellow cable provider NTL in announcing the roll-out of super fast broadband to its top-of-the-range customers.

The cable company will roll-out speed upgrades from next month on a region-by-region basis at no extra cost to existing or new customers.

The current 2Mbps (megabits per second) and 4Mbps options will be replaced by a flagship 10Mbps service in September, with no increase in the £35 per month cost.

Current 512kbps (kilobits per second) customers will see their connection increase to 2Mbps, for the same price of £17.99 per month. Users of the £25 per month 1Mbps service will get a boost to 4Mbps.

Unlike NTL, which announced on Monday it would be introducing a 10Mbps service, Telewest has come clean on increases to upstream speeds, which will also be boosted to 256kbps for the 2Mbps service and to 384kbps for the top-of-the-range services.

Also unlike NTL, all the price bands will remain free of usage limitations, following research which the company claims reveals consumer confusion over bandwidth caps.