Summons

Questions:

• I have got a parking/speeding ticket/congestion charge for a car that has the same number plate as mine, but it was not my car, what do I do?
• I have got a summons for driving offences, but I was not stopped by the police/do not own that car/don't drive, what can I do?
• I have missed the court date on my summons, what will happen?
• I have received a summons for driving offences to appear at court (I was not stopped by an officer), what does that mean?
• I received a summons / conditional offer for a traffic offence through the post and lost it, what do I do?
• What is a notice of intended prosecution?