For a fair few of the city’s signs appear to have been defaced – with zeroes on speed limit signs gently changed to letter Q’s.

There’s one on the Parkway at the junction with Derek Dooley Way – but eagle-eyed drivers have spotted them at other locations in the city too.

It appears the zeroes have been altered using small pieces of black gaffer tape – but quite why remains a mystery.

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Have you spotted any of the signs?

It's not just the numbers which have been altered too – letter O's have also been targeted by the mystery sign swapper.

One sign directing drivers to Manor has been switched to Manqr.

Do you know who’s behind the changes or what they mean and have you spotted any signs on your travels?