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About Us

No-Go Security Products was founded by David Murphy. David worked as a double glazing installer and then as a ‘Window Doctor’ repairing and replacing windows. Noticing how frequently he was called to replace glazed units that that been removed in burglaries he developed the concept of the No-Go Glass Lock.

No-Go Glass Locks have been developed and patented and are now manufactured in Oswaldtwistle, Lancashire.

No-Go Security Products is now working with Local Crime Prevention Officers to raise awareness of the problem of unsecured externally beaded windows and that the No-Go Glass Lock is the simple solution.

No-Go Glass Locks are protected by patent.