The Coalition has reunited over a week after the dramatic split between the Liberals and Nationals.

Nationals Leader David Littleproud and Liberal Leader Sussan Ley have reached an agreement over four key policy demands that triggered the Coalition split.

Ley is expected to announce the new shadow cabinet on Wednesday afternoon.

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The Nationals have ended up with six shadow cabinet positions, one fewer than Littleproud had pushed for before the split.

On May 20, the Nationals walked away from their Coalition partnership with the Liberals following a landslide election loss to Labor, ending a decades-long alliance.

The junior member had sought guarantees on four policies, including a recommitment to nuclear power, a regional investment fund, powers to break up big supermarket chains and universal telecommunications coverage.

The Liberals, still reeling from one of their worst election defeats ever, initially wanted to wait before committing and put every coalition policy up for review.

But by week’s end, they were offering “in-principle” support to those demands, which the Nationals have accepted.

The Coalition last broke up in 1987 for about four months.

- With AAP