Passenger side windows/locking not working

[gothictortoise]

Hiya

Was looking for some advice on an issue I have with my car. I've a 2008 bluemotion and over the past few months I've had an intermittent problem with the front passenger door where it wouldn't unlock. You could hear the whirring noise of it trying to unlock but it wouldn't work. I'd then have to faff around unlocking and locking the door repeatedly until it worked.

Yesterday I also had a new problem where the front passenger window will not work at all and the rear passenger window did work initially but as I was closing it it was definitely struggling so I've not dared to test it again since with all the rain currently!

On a similar note I also have a problem with the boot where that also just doesn't unlock intermittently either.

Any ideas on what each could be and how easy they are to fix or how much it could cost