Thank you. That's a very good question. I would say that now that we have been operating for over a year, we've used all of the functions that we have, with the exception of bringing our own legal proceedings. If I summarize the main functions the OEP has, we have a role to scrutinise environmental improvement plans and targets, and we've now published two reports doing that, and our most recent report, published in January this year, I think has been extremely influential and important in assessing the progress that Government has made, and that's a key part of our programme and something that we will be investing in in future. I think that has been a very valuable exercise for us and for wider government.
We are scrutinising environmental law, and we published our first statutory report in this regard very recently in relation to Government's completion of something called PIRs, which is assessment of the effectiveness of regulation. And we've got two major programmes under scrutiny going on at the moment, one in relation to laws for nature, with protected sites and environmental impact assessments, and one in relation to the regulation of water. Those will report later this year, and we'll see the effect of that. It's very pleasing to be able to have that function, because it allows us to really focus on the gap between the setting of laws and the delivery of them in practice. So, it allows us to see how things are working on the ground, which I think will be very insightful, particularly should those laws be reformed.
We advise Government in relation to proposed changes to environmental law and other matters, and we've provided a number of advices in that respect, including, for example, in relation to biodiversity net gain, in relation to a Green Paper in terms of marine net gain, and a number of others, and those advices, we think, and hope, have been influential, but they've also built our bank of knowledge of these laws, and that has fed into the understanding in both our monitoring and scrutiny functions and our scrutiny of environmental law.
And we have complaints investigations and enforcement, and Dame Glenys has already mentioned that we've had over 80 complaints and over 700 enquiries, which are essentially pre-complaint discussions with members of the public. We've taken two of those through to investigations, one of which will conclude fairly imminently. We've also exercised our power to intervene in legal proceedings; there is a case in front of the Supreme Court today where the OEP's a statutory intervener.
Some of these powers and functions relate or are not hugely dissimilar to the role that the commission had, but, actually, in large part, they go much, much further, and in a way that we have found has enabled us to focus with a forensic-type intensity on issues that are really topical and issues that are really important to Government. So, in practice, I think the suite of responsibilities that we have are a very useful and comprehensive set of roles and responsibilities. The biggest challenge we face as an organisation is the sheer breadth of our remit; it means we have to be very targeted and very selective in the matters that we take forward, and we've invested a considerable amount of time in setting our strategy and deciding how we're going to choose topics to focus on, because the list of topics we could focus on is a very, very long one.