Not since 1991. Even then some replacements were a bit iffy. The impeller on the Unipart pump I purchased was smaller, and had much less of an interference fit in the housing than the original.
So be careful because the outlet pipes also vary according to fit.
Some of the bolts are long so you may need to move the radiator, and they sit in water, so expect some tightness. BL used a glue chemical on the threads which was supposed to stop corrosion.
You could consider having the original rebuilt. Mine sat in the loft for years. I don't even remember what happened to it.
