It is a statutory requirement to display warning signs in certain locations / environments, for many types of anti climb product such as wall spikes, fence spikes, anti climb paint, etc.
Signs should be displayed so that they are easily observable to anyone approaching the protected area, and for a straight linear barrier run, we would recommend that to meet statutory requirements, signs be displayed at not more than 3 metre intervals.
See also our range of anti climb spike products;
wall and fence spikes, spiked collars for poles & drainpipes