Nato summit: Road closures details in Newport and Cardiff

Details of road closures around the Celtic Manor which will host September's Nato summit of world leaders have been announced.

The resort will be closed for the event of 4-5 September and over 12 miles (20 km) of security fencing is already being put up on-site and in Cardiff.

About 9,000 officers from 29 forces in England and Wales are being drafted in to police the summit.

Senior officers say they expect some protest groups to hold demonstrations.

US President Barack Obama will be among the world leaders attending.

Assistant Chief Constable of Merseyside Police Chris Armitt, who is leading the policing and security operation for the summit, said: "We are also working hard to ensure where security barriers will be in public places that access routes will remain open until the very last minute.

"So I am grateful to the public for their continued support and understanding and apologise in advance if any of our activity causes any disruption or inconvenience to them."

A police diver is lowered into a drain at Cardiff Castle on Thursday to check it before it is sealed ahead of the summit

Nato summit road and footpath closures

Closures around the Celtic Manor will be in effect from 22:00 BST on 31 August until 07:00 BST on 6 September.

• Catsash Road will be closed from the junction on Belmont Hill on the B4236 to the junction with Roman Road

• Bulmore Road will be closed from the Bell pub in Caerleon to the junction with Abernant Road

• All footpaths that cross the Celtic Manor Resort will be closed for the event, including Usk Valley Walk and pathways coming from Chepstow Road, Langstone, Bulmore Road, Catsash Road, Abernant Road and Roman Road

• All the footpaths will have notices placed at the start of each closed section informing walkers about the closure

Fencing work is set to start on Thursday in Cardiff. Bute Park, North Road, Castle Street and Duke Street are all set to be finished by 21 August before fencing goes up around Roath Basin between 22-29 August.

The last time Britain hosted the Nato summit was 24 years ago in London.

The event in Wales will also mark the 65th anniversary of Nato.

Security fencing has already started to go up around the Celtic Manor Resort