CG allowance when there is both CG on property and on shares?

If we have capital gains in a given tax year from both the sale of property (taxed at 18%/28%) and the sale of shares (taxed at 10%/20%) against which type of capital gain should we apply the tax-free CG allowance for the year? Can we use the tax-free allowance against the CG type that has higher tax? By way of an example: - Total property CG = £10,000. - Total shares CG = £10,000. If the tax-free allowance is used for the gain from property: - Taxable property CG = £10,000 - £6,000 = £4,000. - Tax on property CG (28% of £4000) = £1120. - Tax on shares CG (20% of £10,000) = £2000. - Total CG tax = £1120 + £2000 = £3120. On the other hand, if the tax-free allowance is used for the gain from shares: - Taxable shares CG = £10,000 - £6,000 = £4,000 - Tax on shares CG (20% of £4000) = £800. - Tax on property CG (28% of £10,000) = £2800. - Total CG tax = £2800 + £800 = £3600. There is a £480 difference in the total CG that is due. Thanks.

Hi
The allowance is allocated against the source that is the most beneficial to you. In this case it would be the property gain.