The four-year-old (above) from Oatlands Infant School has been chosen to present a bouquet of Yorkshire white roses to the Queen when she visits the Great Yorkshire Show on its third day to help mark its 150th anniversary.

Emily's mother Sarah Ferguson, facilities manager at the Yorkshire Agricultural Society, said she was very proud her daughter – " a real little chatterbox – she can't stop talking about it!"

The Queen and the Duke of Edinburgh will arrive at Hornbeam Park on the Royal train at 10am on Thursday for the short car journey to the showground.

They are expected to be taken on separate visits around the show, so they can see as many people as possible, before joining guests for lunch in the President's Pavilion.

They leave at 2.45pm for Hornbeam Park, with the train departing at 3pm.

The Queen was originally visiting Hull in the afternoon, but the parliamentary by-election there prompted the cancellation of that visit, and a longer period of time for the royal couple at the Yorkshire show.

The show starts on Tuesday and usually attracts 130,000 visitors over the three days. But organisers are expecting bumper crowds this year and are encouraging visitors to consider alternatives to the car and take the 'green' option.

Operations Manager Nigel Morgan said: "We are able to offer a number of ways for people to travel to the show. Northern Rail have improved and increased their services from York and Leeds, and there will be a direct free shuttle bus service from both Harrogate Bus Station and Hornbeam Park Station, which will be coordinated with train arrival times."

The shuttle bus services run from 7.30am on each day of the Show until it finishes each evening.

Visitors cycling to the Show can take advantage of a secure cycle park at the White entrance off Hookstone Oval, while those who are travelling by car are encourage to car-share with friends and neighbours if possible.

Mr Morgan added: "The free car parks open at 6am each morning, which is an incentive for visitors to arrive early, avoid the morning traffic and to relax and enjoy a full day at the Show."

Honorary Show Director Bill Cowling said despite the Royal Show moving its dates forward, the entries in the horse classes were up this year at the Yorkshire Show.

He added: "Our cattle and sheep entries are also great, though of course the restrictions in place due to bluetongue disease will affect the number able to attend."

"Bluetongue has affected all agricultural shows dramatically, but we are confident we have done as well as we could in the cattle and sheep classes.

"Our advance ticket sales were up 40 per cent on last year and our trade stand space is fully booked with a waiting list, so all the signs are that the Great Yorkshire Show is set for another hugely successful year for its 150th anniversary."