The victorian panel above was in a sorry state as your can see. By only replacing a little lead and glass and tidying up the rest, the panel was brought back into working order. As a rule I mend as much as is needed and replace as little as possible, thus preserving much of the original work. As a result the panel still looks authentic and attractive, and is robust.
To save the time and expense of removing the panel from the frame, repairs can sometimes be carried out onsite.