Could the Royal Navy have kept HMS Vanguard?

Was there a plausible timeline in which the Royal Navy retained HMS Vanguard?

Yes; a major refit around 1960 and a northern-flank gunfire-support role might have preserved her, especially once the cruiser force was cut faster than expected.

Vanguard was retired on the assumption that newer cruisers offered a more useful return, but much of that cruiser force disappeared within a few years. A major 1960 refit might have created enough institutional investment to preserve the battleship as a gunfire-support asset for NATO's northern flank. The scenario depends on changing the sequence of spending decisions, rather than merely refusing to scrap an aging hull.