"It was fairly wet in the morning," said show secretary Sue Stennett.
"But the visitors were soon rolling up at the gates, and when the sun broke through later the numbers really built up."
Popular attractions included a display of Maypole dancing and choral singing from children at St Andrew's School in Woodhall Spa.
Fiona Sanderson was crowned the May Queen in the main ring.
School children also contributed decorated plaques on the theme of wool in the education marquee.
The event's machinery theme was The Lend-Lease Years, looking back at tractors and other farm machinery brought into the UK during the Second World War.
It was echoed by a parade of standards by local British Legion groups.
During the parade a two-minute silence commemorated the dead of recent wars and those of the 20th century.
Rev John Thorold, officiating the parade and a short service, reminded show-goers that another British life had been lost in military action only a couple of days earlier.
An excellent display of livestock featured in the show classes, with the inter-species championship, judged between the individual champions in the horse, sheep, cattle and poultry competitions, won by the champion horse, Hainton Midnight Sensation, a Shire owned by Sue Cosgrove and Mrs S Ford of Gautby.
Trade stand owners also reported that they had a good day.
Mrs Stennett added: "We rely on our hard-working and very competent band of volunteers to make the day as good as it is."
Show results:
Shire Horses: Judge Mr D Worthington. Champion: S Cosgrove & S Ford with Hainton Midnight Sensation. Reserve: G Robinson with Metheringham Upton Teasle. Best young handler: Rebecca Lund. Cattle classes: Lincoln Red Cattle. Judge Mr J Goacher. Champion: H M & J M Needler with Walmer Lass. Reserve: Michael Read with Hemingby Treasure. YFC heifer: owned by R I Clough & Son, shown by shown by Milly Shipley. Any other pure breed: Judge Mr J Goacher. Champion: Timbury Family with Mara Ensign. Reserve: Timbury family with Mara Pansy 24. Commercial Cattle: Judge Mr I R Wildgoose. Champion: Louise Todd with Aurthorpe Darling. Reserve: Wilkinson Bros with Black Jack. British Blue Cattle: Judge Mr B E Newton. Champion: John Mawer with Immediate Et 2840 De Memongue. Pure Continental Beef Breeds: Judge Mr B E Newton. Champion: R W Hopkinson with Glebehill Warrior. Reserve: W Hardy & Sons with Millington Dessert. Dexter Cattle: Judge Mr Creasy. Champion Mrs C A Raybould with Welland View William. Reserve: Mrs C A Raybould with Welland View Blossom. Interbreed Cattle Championship: Judge Mr Paul Gentry. Champion:Louise Todd with Aurthorpe Darling. Reserve: H M & J M Needler with Walmer Lass. Sheep Classes: Lincoln Longwool. Judge Mr A C Read. Champion: Mr K M Robinson with Yearling Ram. Reserve: Mr M Parker with Yearling Ewe. Minority Breed Classes: Judge Mr P Titley. Champion: Mrs S Vicars with Oxford Down ewe lamb. Reserve: North Sea Camp with Galway ewe lamb. Hampshire Down: Judge Mr J Cresswell. Champion: Mrs J Atkinson with shearling ewe. Reserve: P Kettle with Ram lamb. Commercial Sheep: Judge Mr P C Longdin. Champion: P Paul with a Ram. Reserve: G Allison with Pair Lambs. Continental pure sheep: Judge Mr P C Longdin. Champion: Mr G Allenby with a Ram. Reserve: Mr G Allenby with a shearling ewe.
Any other Native British Breed. Judge Mr J Cresswell. Champion: Tina Blythe with a Suffolk ewe lamb. Reserve: Arlott with shearling ewe. Zwartbles: Champion: Harvey with Ram Lamb. Reserve: Harvey with Ewe. Interbreed sheep: Judge Mr J Taylor. Champion: Mr G Allenby with a 2 shear Charollais Ram. Reserve: Mr K M Robinson with a Yearling Lincoln Longwool. Interbreed Livestock: Best Horse, Cattle, Sheep and Poultry. S Cosgrove & S Ford with Hainton Midnight Sensation. East of England Poultry Club Show: Judge Mr C Lowe. Best in Show: Mr T Aldous with a Gold Dutch Bantam. Reserve: Mr R Bett with a large Gold Brahma. Best Tractor in off farm condition: Judge Mr G Enderby. John Pickwith a Ford 5000. Best Tractor in Show: Judge Mr G Enderby. T W Harrison with a Massey Ferguson 35x. Best Vintage or classic Car: Judge Mr B Edwards. Mr M Osborn with a 1955 Ford Consul Mk 1. Best Stationary Engine: Ken Ranshaw with an International M. Best Large Trade Stand: Judge Mr B Pickwell. Furze Hayledge, Stixwould. Best Small Trade Stand: Judge Mr B Pickwell. Waltham Herbs.
Best Craft Stall. Judge Mr P Vince. Diana M Cunningham