You must get work authorization (EAD) which you can use to get a driver's license.

How can I move to the states, from the UK?

Unless your best friend becomes your fiance or spouse, probably the only other way would be to apply as a foreign student to obtain an F-1 visa.

Outside processing time request for i140 form ?

If you want your I-140 processed faster, you must file for premium processing. That does not seem to be confusing.

221g pending -- filing new/fresh H1B cap exempt petition?

You have at least one attorney who is being paid good money to represent you. That is who you should discuss this with. You might first ask for...

Can we file I360 and I485 concurrently?

No, you cannot file the I-485 until after the I-360 is approved. Work authorization is allowed while the I-360 is pending.

Do I need to update my Green Card status upon getting married?

Congratulations but no you do not need to notify CIS.

What can I do ?

You need to consult with a Board Certified Immigration attorney immediately.

How do Add my wife to my immigration file?

If your case is FB-2B and your mother has a green card, the case ends when you got married. If your mother is a US citizen your wife is...

Can i still fix my parents papers if i get married ?

Your marital status does not impact you parents case.

Yes the can filed for you again since the first one was denied.