Quillardine has 600,000 of deductible differences at 31 December 20X5 (rate: 25%). Evidence gathered: 300,000 of taxable differences of the same entity reversing in the same periods; a tax budget forecasting 200,000 of taxable profit after deducting the reversals; a hoped-for gain on a plant impaired last year; and the reversal of a provision presented by management as 'tax planning'. Write the note supporting the amount of deferred tax asset to be recognised.