The consumer has a right to replacement or repair for six years after purchase in certain circumstances - see https://www.citizensadvice.org.uk/consumer/somethings-gone-w... - any warranty the seller chooses to supply is in addition to this.

I had a MBP mainboard replaced after four(?) years in a generation where the graphics chip was known for dying. Late 2012 maybe? That machine had so many replacement parts, I think it might be a ship of Theseus by this point.