You probably wont get much of a response to this question, as the general opinion is find the answer yourself, you are a law student therefore should have the capability to read and learn.
That said, the EU has a massive role in the law making process in E and W. If the EU enacts a regulation , then it is directly applicable in E and W. Similarly, if the EU issues a directive, the legislature has to make sure that any current law on the same matter is compatible, if not it must enact new legislation to comply. Failure to do so puts the E and W in breach of community law.
The ECHR is different, all domestic legislation has got to be read and declared compatible in the law making process. Derogations are permitted, only on certain grounds.
This should get you started, but I suggest you have a chat with your lecturer if you don't understand. You wont get great marks relying on answers from here
Jo