REIGNING world and European champion Michael Jung will make his Badminton Horse Trials debut in May.

The German rider will be the leading rider in the field, with horse Leopin FST.

Twelve nations in total are represented on the entry list, with a waiting list of 49.

The horse with most international points at the top of the entries is Lenamore, looking for his first win and eighth completion under Caroline Powell from New Zealand.

Six previous winners are among those accepted.

Mary King, the 2011 HSBC FEI Classics Series champion, Pippa Funnell, the only Rolex Grand Slam winner, William Fox-Pitt, six-time Burghley winner, Mark Todd, the 2011 Mitsubishi Motors champion and double Olympic gold medallist, Badbury-based Andrew Hoy, triple Olympic team gold medallist back at Badminton after a short absence and Oliver Townend, another who has done the Badminton and Burghley double.

Zara Phillips is expected to compete for a top placing with High Kingdom while Marlborough's Andrew Nicholson (New Zealand) goes for his first win after a record 32 completions to date.

Former world champion Jean Teulere heads a strong French challenge.

It will be the final chance for some riders to impress their national selectors before this summer's Olympic Games.

The Trials get underway with the Mitsubishi Motors Grassroots Championships on Thursday, May 3, with the international event starting with two days of dressage on Friday and Saturday (May 4-5).

The cross country discipline takes place on Sunday, May 6 with the showjumping climax in the main arena on Bank Holiday Monday (May 7).