Oliver has withdrawn Cooley Master Class and Ulises, so his rides will be Ballaghmor Class, Cooley SRS and MHS King Joules.
The world number one will be the pathfinder on Tom Joule’s 13-year-old MHS King Joules, who was seventh in the US four-star at Kentucky in April.
Cooley SRS, the 11-year-old Badminton runner-up who belongs to Angela Hislop, will start at number 53.
He will be the last rider on course as number 107 with last year’s Burghley winner Ballaghmor Class, an 11-year-old who belongs to Angela, Karyn Shuter and Val Ryan.
Andrew Nicholson has also narrowed his three entries down to two starters. He has withdrawn Teseo and will start on Jet Set IV (number 15) and Swallow Springs (number 98).
There have also been a few more last-minute withdrawals from the event, which kicks off with the first horse inspection this afternoon (Wednesday 29 August).
British first-timer Will Furlong has withdrawn Collien P 2, saying that the stifle wound she incurred on the cross-country at Haras du Pin earlier in August has not healed enough for her to compete and he hopes to head to Pau in October.
New Zealand rider Caroline Powell has pulled out Up Up And Away, although she still competes with On The Brash.
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Full Burghley preview in the Horse & Hound currently on sale (dated 23 August) and don’t miss our bumper report in 6 September issue.