No. They incurred a cost and applied for a tax refund for ~43% of those costs back.
Tell me - in your tax return do you recognise any tax refunds as income????
In fact if you look at the ISX tax note where it reconciles accounting profit to tax expense, you will see that the r&d is SPECIFICALLY excluded(added back) to work out the tax expense, because you ARE NOT taxed on a rebate you receive.
You're digging this hole deeper for yourself.
Therefore it is absolutely and categorically CORRECT to say that R&D rebates are not a form of revenue, but rather other income. As you will see they actually amended their financial report for 31/12/18 to correct this, after they received their nice performance shares
