Euro MPs increase their allowances to cover staff costs while rejecting a move to subject their expenses to an obligatory audit.
EU Commission President Jean-Claude Juncker says he wants a "fair deal" for the UK and does not rule out EU treaty change.
A new EU-wide alert system to deal with road accidents, called eCall, gets the go-ahead from Euro MPs.
How MEPs from 28 nations work together
Maps showing how EU has grown over decades
How the EU is coping with irregular migrants
What are migrants living in another EU country entitled to?
Rules governing movement of people in EU
Key issues explored following EU's biggest election yet
Video tour behind the scenes at EU institutions
Will Juncker's new EU fund lure investors?
Eurosceptic surge and other election landmarks
The big issues in Europe's election - in stark detail
Losing European identity in crisis-hit Greece