Thanks for the replies,
it's a shame to have to replace it at all, however it has been severely damaged whilst on its travels to the UK from the US.
There are two pieces missing from it (torn off to gain access to see what was inside?)
The first piece missing is the right hand/forward corner (running into the right hand forward vent hole) and the second is around 8" of the entire rear lip/trailing edge!!
A skilled GRP person may be able to repair it with the necessary parts from another panel but a replacement, new or used, would seem the more sensible and quickest way forward?!
I like the idea of bracing the panel with an "X" of foam as they do seem to be excessively flexible - although my current panel is more flexible than most as it is "super lightweight!"
Mark