Travel early and be patient. That is the advice to tens of thousands of people heading to the Royal Norfolk Show this week.

More than 80,000 people are expected to flock to the showground at Costessey on Wednesday and Thursday for the biggest two-day agricultural show in the country.

A traffic management plan is in place to ensure delays are kept to a minimum.

Mark Nicholas, show and programmes director, said: 'Once again we would like to remind all visitors that due to the sheer volume of people visiting the show, it is inevitable that the local road network will be affected.

'Please bear in mind the roads will be extremely busy especially during mid-mornings and late afternoons.

'If possible, we recommend you avoid travelling at these times, although we realise this not always practical.

'We take traffic management very seriously and have plans in place to minimise the impact on the local community as much as possible.

'We would like to thank all visitors in advance for their patience over these two busy days.'

The show celebrates the best of food, farming and the countryside, together with grand ring shows, live entertainment and local food and drink.

A number of well-known local organisations including Norfolk Wildlife Trust, Norfolk Chamber of Commerce, Countrysiders, City College Norwich, Cub Scouts and RAF Marham will celebrate a significant milestone this year.

There will be a sunset ceremony which will give a nod to RAF Marham's centenary and the Queen's 90th birthday.

Weather permitting a Spitfire from the Battle of Britain Memorial Flight will fly over the show on Wednesday at 12.30pm.

The Prince of Wales and Duchess of Cornwall will tour the showground on Wednesday afternoon.

Tickets and car parking prices

Tickets are on sale from www.royalnorfolkshow.rnaa.org.uk There are various ticket outlets around the county including EDP offices, supermarkets and Tourist Information Centres will also sell advance tickets. Prices:

Adult (aged 17-64) advance purchase price online: £20 (£25 on the gate)

Child (aged 5-16) advance purchase price online: £7 (£10)

Family (two adults and up to three children) advance purchase price online: £45 (£60)

Children under five enter free when accompanied by a full paying adult.

Concessions: age /disabled (over 18): £17 (£22); carer: £10 (£12).

Car parking any one day advance purchase price online: £6 (£10)

• Don't miss Tuesday's EDP for a voucher to entitle you to a free cup of tea or coffee at the show