It is a pleasure to follow the right hon. and learned Member for Beaconsfield (Mr Grieve). If he is concerned about tertiary legislation, I invite him to co-sign my amendment 291, which will be taken on day 8 of our consideration of this Bill, and which would require all tertiary legislation made under powers under these regulations to be subject to parliamentary control. That would go some way towards addressing some of the concerns he and I have about tertiary legislation. I rise to speak to new clause 62 and amendment 138, tabled in my name. This Bill poses a severe risk that environmental legislation on exit day becomes zombie legislation, no longer updated or enforced, and vulnerable to being watered down or dropped entirely. Amendment 138 seeks to prevent environmental protections from being watered down, and new clause 62 would require the Government to come up with a solution to the governance gap. That is important because 80% of the UK's environmental protections come from EU law. This Bill will have to deal with swathes of environmental law, and we do not want it tampered or fiddled about with in any way if we leave. Those laws have brought us a very long way since the 1970s when we were seen as the dirty man of Europe, but they are neither self-executing nor self-policing. They set air quality targets, climate change targets and water quality standards, and the rules and regulations affect almost every aspect of our waste management industry. It was interesting that the Prime Minister said yesterday that waste, water, food and agriculture would all be subject to continued regulatory alignment; we wait to see what that means in practice. Those laws mean we bathe on cleaner beaches, drive more fuel-efficient cars and can hold the Government to account on air pollution. We are part of a global gold standard in chemicals regulation, and the chemicals and pharmaceuticals industry yesterday wrote to the Environment Secretary stating in terms that it wishes to stay in the registration, evaluation and authorisation of chemicals regulation. On a previous day's consideration of this Bill, the Minister of State, Ministry of Justice, told me in response to my concerns on REACH that it is directly applicable in UK law, but he fundamentally misunderstands what REACH does. It creates a body-the European Chemicals Agency-which regulates, evaluates, authorises and enforces that law. We do not have such a body in UK law, so although that directive may be directly applicable and be valid in UK law, there is no body to carry out its functions. As we go through this Bill we are going to find that that is the case. There may be a body that the Minister thinks he can dump those functions on through a duplication of legislation, but that is not a perfect or elegant solution. Today, we are a world leader in environmental standards, and, crucially, we are able to hold this Government to account. That certainly focuses Ministers' minds when there is the threat of infringement or infraction proceedings. Leaving the EU means we lose those governance, enforcement and accountability mechanisms, and new clause 62 requires the Government to ensure that environmental law is enforced after exit day. That is why my Committee called for a new environmental protection Act. The Government have said that that will not be necessary, so since they have refused to introduce such an Act, amendment 138 aims to preserve retained EU environmental law. Much of this environmental law will need technical corrections, and the unpicking of 40 years of legal ties to EU institutions and agencies is the biggest administrative and constitutional task that this country has faced since world war two.