Sorry I am only a month late on this one.
1) plenty of storage yards around, there is one on the kingsbury road by spagetti junction.
2) I second Precise saw and tool, Although I no longer use them (not due to quality of service etc, but they cannot service our requirements)
3) there are plenty, Lavers aren't the best in my opinion, although I do use them from time to time. When I first started up I used Great Barr sawmills, as they offered a cutting service.
If you ever need a cut and edge service, Ie MFC boards cut to size and edged, then I can help you out.