By Jonathan Davies

The proposed M4 relief road is not a priority of small and medium-sized enterprises (SMEs) in South Wales, according to the Federation of Small Businesses (FSB).

Iestyn Davies of the FSB admitted that "bottleneck" around Newport was an issue, but he said the money from the "£1 billion piece of tarmac" could and should be used to support skills and improve other transport links across Wales.

His comments come after the CBI called for assurances that the project would go ahead, following Transport minister Edwina Hart announcing that she will not be seeking re-election at the next Assembly elections.

Chris Sutton, chairman of CBI Wales, said the M4 relief road was a "number one priority for the Welsh economy".

"We recognise that ministers, and indeed, governments change however the challenge is to quietly 'crack on' in dealing with the long-term issues which form the foundation of future growth," he said.

"We will seek reassurances from the Welsh government in this regard."

Ms Hart told BBC Wales: "Let me make it clear I'm part of a government, I'm part of an administration that has decided to go ahead with this project.

"Everything is in place.

"The decision won't be until 2016 but we've done everything we need to do in terms of how we're looking at the plan developing."