Michelham Priory

Debate between Nusrat Ghani and Rebecca Pow

Tuesday 15th September 2020 Commons Chamber

[The Parliamentary Under-Secretary of State for Environment, Food and Rural Affairs (Rebecca Pow)]

I congratulate my hon. Friend the Member for Wealden (Ms Ghani) on securing this Adjournment debate and on putting her case very strongly, and rightly so because it is such an important part of her constituency. Michelham Priory is, as she says, a grade I listed building. It is one of our foremost Augustinian priories, with a rich history, stretching back nearly 800 years. With its grade I listing, it boasts Britain’s longest continuous medieval water-filled moat, which is quite something actually, because only 2.5% of England’s 400,000-plus listed buildings are classed as grade I, so it is special.



I agree with my hon. Friend that it is essential that we do what we can to protect the historic environment, including the priory. As she mentions, the Environment Agency over many years has held many meetings with the Sussex Archaeological Society, the owners of the priory, to discuss matters of water management relating to the priory. Those conversations started long before my hon. Friend came to this place. Nevertheless, I understand that a key concern of the Sussex Archaeological Society has been to avoid flooding the priory grounds in the winter and drying out the moat in the summer—something which obviously has deterred the holding of events at the priory, which provide important income for the society. It is the Environment Agency that has to manage the water control structures to reduce that flooding aspect—that is one of the key areas that comes under its hat. Unfortunately, because of the wide expanse of the moat, fed by high flows through channels in the winter, salty river deposits have built up naturally. I have been told that at the moment the moat is 80% filled with silt. That can result in its drying out in the summer months, and there is a risk that the moat will be lost to posterity if it is not looked after, as my hon. Friend says.

To prevent the moat from drying up, in the past, the Environment Agency operated the upstream controls to divert the Cuckmere river into the moat, but that approach created an impassable barrier to fish, so it had to cease. My hon. Friend has not mentioned that then there appeared in the moat a plant called floating pennywort, a non-native invasive species that grows incredibly rapidly and is responsible for swamping waterways, blocking water flow, clogging up water channels, crowding out native plants and taking oxygen from fish and insects. It is not found anywhere else on the Cuckmere river. The landowner, the Sussex Archaeological Society, has a duty to prevent the spread of the infestation, and diverting the river through the moat in the summer months would have increased the chances of the plant’s escaping into the wider river environment. To intentionally do so would be classed as a criminal act. That is one of the big dilemmas of the situation.

[Ms Ghani]

This is a medieval moat. I do not think the Environment Agency can come up with excuses of potential flooding when the moat has been in place longer than any person of expertise within the Environment Agency. The archaeological society, including the staff I mentioned within the priory, has procedures in place to make sure that no crime is committed. It just needs an understanding from the Environment Agency that it will open the sluice and let the water flow.

[Rebecca Pow]

I thank my hon. Friend for that point, but I think she is slightly missing the point that if one let the water flow, the pennywort would flow out. The pennywort is a real obstacle in the chain of sorting this out, and that is what needs to be addressed.

I have talked very closely with the Environment Agency about this and I do get this point, which needs to be addressed. I would say—and will reiterate as I go through— that I think more conversations need to be held about this, because it is one of the keys to unlocking what I believe my hon. Friend is aiming to achieve.

The Environment Agency is managing the floating pennywort in the moat on the society’s behalf at its own expense because, even confined within the moat, it needs to be reduced. The agency is trying to tackle it, as part of its commitment and duties to conserve the environment and protect the downstream Cuckmere river. I want to be clear that the Environment Agency has duties in respect of the river, but they are very much in terms of protecting the wider environment; that is the agency’s role.

If my hon. Friend would like to discuss these matters further, I have asked the Environment Agency to meet her in order to further that.

[Ms Ghani]

I am grateful to the Minister for allowing me to intervene again. The frustration is that there have been meetings over eight years—eight whole years during which the priory has been and is absolutely committed to working with the Environment Agency, taking on board any of the financial implications of desilting, and managing the plants; but the Environment Agency has not come up with a plan. How many more meetings can I expect them to have, after eight years have delivered nothing from the agency?

[Rebecca Pow]

I am not surprised—this is the case that my hon. Friend has been making since the beginning. As she says, for the moat to be reinstated to a healthier and more resilient condition, the pennywort needs sorting out and the silt needs removing. Environment Agency staff have offered advice to the Sussex Archaeological Society about methods of silt removal and suggested efficient ways of dealing with the silt that could reduce the cost of the operation. They also offered to help with obtaining the permit to do the work, which obviously has to be achieved.