Explain to your new employer you have been chosen as a juror ( this says to them you are of good character ), when you go to the court have a quite word with the person who inducts you , tell them its difficult and your circumstances and they will make it happen for you and get you excused especially if it is over subscribed with potential jurors. I have Been called twice , it is exciting pomp and ceramony . loads of waiting about very interesting in parts and I was proud to be part of it , you will enjoy it .