Can anyone help? I am looking for an acredited company in South West London or near to to fix the hinge on my PVC double glazed sash vertical opening window. the company that installed them The Windows Guild Ltd have mysteriously vanished along with my guarentee of 10 years!!!! I am really finding it difficult to find a company who deals in repair of PVC windows. This is an urgent matter as I need to get this window fixed ASAP. ??? :-\