The owner of an abattoir caught up in the horse meat scandal is contracted to remove fatally injured horses from the Grand National.
Peter Boddy, whose slaughterhouse in West Yorkshire was raided by the Food Standards Agency (FSA) on Tuesday, removes the carcasses of some horses which have been put down during the world famous meeting, Aintree racecourse said.
The Liverpool racecourse said it was "confident" no unfit meat had entered the food chain.
In a statement, a spokesman for Aintree said: "The racing industry takes every possible course of action to ensure that horses, fatally injured on a racecourse, cannot enter the food chain.
"Proactive and considered measures are in place to prevent this, such as passport identification backed up by a sticker on the passport and close liaison with licensed disposal organisations.
"Aintree racecourse follow these guidelines to the letter and can confirm that Peter Boddy, who has been mentioned in newspaper reports, is contracted by Aintree to remove carcasses if required. By the time these carcasses are returned to the disposal organisation's premises they are totally unsuitable for consumption.
"They are fully signed off as unsuitable. Indeed, it is illegal for horses humanely put down by injection on the racecourse to enter the food chain. We are as confident as we possibly can be that no unfit meat ever reaches the human food chain."
During last year's Grand National, Synchronised and According To Pete were both put down following falls. Four horses died at the meeting in 2011, including Dooneys Gate and Ornais in the big race itself.
The British Horseracing Authority said: "The British racing industry is among the most strictly regulated of all equine activities and sports. This includes a range of checks and balances for horses after they leave the sport.
"Since 2000 every thoroughbred registered in Britain has had a microchip enabling each and every horse to be identified. All racehorses are also issued with their own equine passport containing information including where appropriate their lack of suitability for consumption."
21 January 2017Bristol De Mai's day as Alary falters in Peter Marsh at Haydock
Nigel Twiston-Davies salutes The New One after Haydock triumph
Un De Sceaux to run at Cheltenham for rearranged Clarence House Chase
Neon Wolf cuts loose at Haydock to claim Supreme trial
Waiting Patiently pounces at Haydock for Malcolm Jefferson
Hereford forced to abandon Sunday card
Deepsand a shore thing at Haydock for Alexander Thorne
Classy Jezki back in business at Navan
Yorkhill faces examination of chasing credentials at Leopardstown
Heartbreak City bids to transfer top Flat form to valuable jumps prize
Hereford inspection brought forward
Clarence House Chase switched to Cheltenham
Sunday check for Hereford card
Fontwell team call inspection ahead of Sunday meeting
Frozen Taunton loses Saturday fixture
Dual Group One winner The Grey Gatsby joins Dermot Weld
Ascot card called off following early-morning inspection
River flows deep for Tim Vaughan at Chepstow
Project Bluebook earns Cheltenham quotes with Musselburgh success
Colin Tizzard earmarks Cleeve Hurdle charge with West Approach
Injury setback for Andrew Thornton but 'this is 100 per cent not the end'
Peter Bowen ponders hurdling return for Henri Parry Morgan
Alan King puts 'progressive' Elgin on trial at Haydock
Dashing grey Politologue takes next step up the ladder at Haydock
The New One primed for Champion Hurdle Trial hat-trick bid
Colin Tizzard wary of Alary's weighty task in Peter Marsh Chase at Haydock
20 January 2017Tom Symonds keen to test Don Bersy before Haydock date
Jezki back on road to Cheltenham with Navan return
Un De Sceaux and Ar Mad set to renew rivalry but weather threatens Ascot
Ascot 'up against it' as Clarence House Chase card in jeopardy
Partly-frozen Ascot to stage inspection before Clarence House fixture
Chepstow given go-ahead after precautionary inspection
Classic quotes for Really Special after Meydan success
Alfie proves a money-spinner for Kerry Lee at Wincanton
No place quite like Ludlow for Land Of Vic
Willie Mullins happy with progress of Faugheen and Annie Power
Ryanair Chase on the horizon for Sizing John after Kinloch Brae success
Willie Mullins mob-handed in Mares' Hurdle at Cheltenham Festival
Ballyandy heading straight to Betfair Hurdle
Faugheen and Annie Power part of 47-strong entry for Stayers' Hurdle
Un De Sceaux and Ar Mad clash in Clarence House Chase at Ascot
19 January 2017Sizing John shows strength to win Kinloch Brae at Thurles
Taunton Saturday fixture subject to inspection
Go-ahead for Wincanton after fourth inspection
Graeme McPherson considers Yorkshire raid with Cheltenham hope Ami Desbois
'Hopeful' Wincanton calls fourth inspection
Barry Murphy has Cheltenham Festival in mind for Pairofbrowneyes
Third inspection called at Wincanton
Chateau Conti has Supreme goal at Cheltenham Festival
Wincanton announces second course inspection
Wincanton takes precautions
Ascot and Haydock positive over weather for weekend action
Midlands National target for Pobbles Bay
Champion Hurdle entry for Moon Racer but Supreme the 'logical race'
Beyond Conceit in Supreme picture after Newbury return
Big date with Heartbreak City for Donagh Meyler
Relkeel winner Agrapart all set for Stayers' Hurdle tilt
Really Special bids to put Classic case at Meydan
First Lieutenant just one of the stars in red-hot hunter chase at Thurles
Willie Mullins hands Black Hercules Thurles redemption mission
18 January 2017Jimmy Moffatt sitting tight with Highland Lodge ahead of Aintree
Joy for owner Bill Davies as he bags first winner - after 25 years of trying
Desert Orchid's trainer David Elsworth hoping to keep Kempton
Warren Greatrex warns The Nipper not certain to make Cheltenham
Boost for courses as racing back to second-best attended sport
Evan Williams set to put Clyne on trial at Haydock
Warren Greatrex considers Stayers' Hurdle test for One Track Mind
Annie Power and Faugheen star in 28 for Champion Hurdle
Newbury receives go-ahead at third attempt
Newbury 'very hopeful' as third inspection announced
Kerry Lee ducks Thurles mission with Ascot-bound Kylemore Lough
Newbury announces second course inspection
Roger Charlton keeps the faith with Frankel filly Fair Eva
Newbury calls inspection after overnight temperatures drop below freezing
Second Thought continues on the up at Kempton
Classy Starchitect up and running over fences at Ayr
Politologue stars in novice entry at Haydock
Contrasting views on Kempton closure from prominent Newmarket figures
Cyrus Darius primed for eagerly-awaited weekend return at Haydock
Heartbreak City on course for big handicap date at Leopardstown