Well, sorry to say it, but I think you may have to take this one on the chin.
The suspension signs have been correctly placed by the single sign giving the restrictions for the bays. You say you were "a few spaces away from these hoardings". In fact you were less than two spaces away. In addition, the suspension sign specifically lists the bay you were in and it is just below the details for the other space that you say you read, so a bit of a puzzle. Were you in rush for the appointment ? We see so many threads where the OP parks in a rush, and reaps the consequences. The motto "act in haste, repent at leisure" seems to apply a lot with parking PCNs !
In total, the suspensions suspend the single car club space, plus the space next to it, and to provide a temporary club space, the one outside No3 is suspended to make a space for the club, but it doesn't actually do this because a suspension is suspension regardless, but no doubt if a club member parked his car there they would not serve a PCN.
