In determining whether the European Union has undermined the United Kingdom’s sovereignty, one would need to have a decent definition of sovereignty.
3) Does the EU restrict the work of the Lords?
4) Does the EU restrict the work of the Law Lords + judicial system?
5) Does the EU drive government policy?
7) Do the EU courts impact the UK?
8) Does the Euro impact the UK?
9) Is the UK becoming more European as a result of the EU?