Hello and welcome to the site. Thank you for your question.Some thing for your consideration ... a pragmatic approach would be to gve money to charity as opposed to the Exchequer.
More information on reducing your inheritance tax bill by giving to charity can be found here
Actually, thinking about tax payable in absolute terms .. it would amount to £2,000 in today's money and maybe at the time of calculation the threshold may have increased to absorb this access and no tax is payable.From a personal point of view, I quite like your approach of pay the tax man and close the books forever.
I hope this is helpful and answers your question.
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