Well just my opinion as you say but since you asked: Lost in the Supermarket. I just went back to listen to it to remind myself why it grates and it's the lazy, anything-will-do of the lyrics for one thing:
I wasn't born so much as I fell out
No one ever listened to me
We had a hedge back home...
All depends on your taste of course but two brilliant albums that year were:
Wire - 154
The Fall - Dragnet
BTW I have never understood the hype over London Calling. I like the Clash but it's a messy over-long album with some bad, lazy songs on it.