They are indeed Blongb, well done.
I was walking down West End Hill opposite the school when I saw them and thought that they would make a good question but expected Nemesis to have got it straight away.
The National School of St George was at one time allowed to go into extreme disrepair by the then owner and a planning application was made to demolish the building and build apartments in its place but the application was refused by CCBC thanfully and was later sympathetically restored by the new owners of the property.
It's strange that the owner who seriously neglected the National School is now featured in the forum's list of eyesores, namely Castle Hotel, Llandudno Youth Centre and somehow in the Pier Pavilion