To be fair Brendan, a pretty significant chunk of your hypothetical nurse's lifetime earnings (and pension) will also be exempt from income tax, due to various reliefs and allowances.
Only a tiny proportion of the overall population hold liquid securities outside a pension wrapper so I don't think introducing a periodic deemed disposal for CGT purposes would have a significant impact on the exchequer and would be fairly costly to administer.
I do agree with you that there is no compelling reason to increase the current CAT exemption thresholds and I would have some sympathy for the argument that they should in fact be reduced.
Only a tiny proportion of the overall population hold liquid securities outside a pension wrapper so I don't think introducing a periodic deemed disposal for CGT purposes would have a significant impact on the exchequer and would be fairly costly to administer.
I do agree with you that there is no compelling reason to increase the current CAT exemption thresholds and I would have some sympathy for the argument that they should in fact be reduced.