Surely this can't be deliberate in a tongue-in-cheek, ironic kind of way?

[roisin]

Notice on shop door:
Kid's
Track
Suit's

and another one:

Croc's

I walk past this shop everytime on the way home from town and the notices always cause great hilarity. Obviously I've never been in!

No it sounds like the level of literacy from your average British person.

(Thanks for your advice on my HLTA thread the other day BTW)