I don't know which was my first, but I do distinctly remember buying a Weequay in the Tesco's in Sevenoaks for another kids birthday and being slightly annoyed as I wanted a Weequay. I can't remember the kid's name or anything else about his birthday party but I do remember Weequay and the wall of Star Wars figures n Tescos.
I also remember buying a Jabba the Hutt playset from JH Lorimers will combined pocket and birthday monies, I think it was right at the end of the line as he was discounted. I remember being fascinated by the box pictures showing the 'dungeon' under his throne. The same shop at one point had bins and bins full of discounted trilogos as well.
If only I had the wisdom to pick them all up, I'd be rich, rich beyond the dreams of man.