"DavidKendall" wrote in message
...
I've got an up and over door with the lock in the central handle and want
to
improve the security.

Does anyone know, please, when I might find a suitable product or can off
any advice ?

I secured my garage door (basically similar to yours) internally (only works
if garage has another door), by making use of the LH & RH brackets above the
door and from which, in my case, the hinge arms are mounted. I simply
dropped in two sturdy 90deg steel brackets. Anyone able to get past the
lock would have encountered these, and in addition the noise against the
steel door would, I hope, have been a deterrent.

--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk/oddimage.htm