[2] A watermill in the grounds of the priory has been restored to working order and is open to the public.

[6] All Gilbert's lands and honours were forfeited in 1235 as punishment for his going to Normandy without licence from King Henry III.

Robert Reade, bishop of Chichester, granted the advowsons of Alfriston and Fletching to Michelham Priory in that year.

[14] In 1544, Henry, Earl of Arundel exchanged Michelham Priory with Queen Mary for other property.

Foote alienated the manor and hundred of Michelham Parkegate to Ambrose Smythe in 1574.

In 1601, the priory was sold to Thomas Sackville, 1st Earl of Dorset (Lord Buckhurst) for the sum of £4,700.

On her death in 1675, the property remained in the Sackville family, passing down the Earls (later Dukes) of Dorset until the death of John Sackville, 3rd Duke of Dorset in 1799, then passing to his daughter Mary, Countess of Plymouth.

[18] The property remained in private hands into the 20th century, when it was restored by the Sussex architect and antiquarian, Walter Godfrey.

With an endowment from Kenneth, Earl of Inchcape as a memorial to his friend John Fletcher Boughey who was killed during the Second World War, Hotblack gave the property in trust to the Sussex Archaeological Society on 1 November 1959.

The chapter house and dormitory stood south of the church, on the east of the site.

[32] The five bells, cast by unknown founders, collectively weighed 40cwt (2030Kg) and were sold to John Ipingbury for £26 13s 4d at the dissolution of the monasteries.

[33] The dovecot, also described as a stables or pigeon house, is a single-storey building of sandstone, ashlar on the south facing aspect under a hipped pegtile roof.

There was a window at the west end which was 13 feet 6 inches (4.11 m) wide,[32] the outer frame of which survives today.

[40] Adjacent to the refectory is the Prior's House and crypt, which was above ground on account of the low-lying position of the priory and risk of flooding.

[47] Built on an oak frame, it is of three bays clad with weatherboards and under a pegtile roof.

A turbine was installed in the mill race to generate electricity for the main house in the former refectory.

[48] The mill was restored to working order in 1972, new machinery and a new breastshot wooden waterwheel being fitted.