Sewage Pollution

I am very proud to have the Rivers Usk and Wye in my constituency but, as has already been said, the Wye flows from my constituency into England and back again. Last year, I asked the then Environment Minister, my hon. Friend the Member for Taunton Deane (Rebecca Pow), to chair a roundtable of all parties with her counterpart in the Welsh Government. She kindly agreed to that, but the Welsh Labour Minister told me there was no value in such a meeting. Can the Secretary of State advise me on how we can drag the Welsh Government to the table and engage with them on this issue?