There was an abattoir in Galashiels that took pigs, but their main slaughterman was seriously injured by a wild boar, was off for months and eventually the abattoir had to close down.
The lack of nearby slaughter houses for pigs was one of the reasons we stopped keeping them.
I have heard that there are moves afoot to reintroduce small abattoirs but that's little comfort if you have pigs ready to go.