A blank Islington Council warning sign has been spotted by a Crouch Hill blogger

It looks like a warning sign – but you would be hard-pressed to know what the danger is.

This blank notice was spotted at the weekend in Courtauld Road, Hornsey Rise, by Crouch Hill-based blogger Mark Pack.

Mr Pack, who uploaded the picture on Sunday, was left wondering if it was put up simply to warn residents to be wary “of everything”.

The 42-year-old, who works in public relations, added: “There’s no obvious danger there that it should be warning against. It’s amusing more than anything and it’s almost a bit of modern art.”

Islington Council admitted it did not know what the sign, thought to have been in place for more than five years, was for – and said officers would take it down.

Paul Convery, Islington Council’s executive member for transport, said: “Nobody has the faintest idea why it’s there, but we think it’s been around since 2005. We can’t spot any obvious hazard that it’s warning about.”

The council has made a string of signage slip-ups in recent months.

In January, it warned residents not to attach anything to trees – by sticking a notice to a tree in Highbury Fields.

It read: “Please do not attach or affix any structures or objects to the park furniture and trees.”

It was spotted by Islington architect Nadi Jahangiri, who said: “If you want to stop someone doing something, doing it yourself is an odd way to go about it – but that’s Islington Council for you.”

The council admitted it had been put up by a junior officer “in error”.

In July an emergency fire access route in Annette Road, Holloway was blocked off. A post for a schoolchildren crossing sign was put up in the way – after officers ignored writing in the road clearly stating “fire access keep clear” – making it too narrow for a fire engine to get through. The post was swiftly removed after the Gazette alerted the council.

Mr Convery added: “If members of the public see street signs which are pointless, damaged or misplaced, let us know and we’ll fix the problem.”