Thanks for your question
Can you expand - is this from your own residence or another means such as a pension pot ? And will the money released then created a "debt" on the equity lump sum?
own house, yes debt will be created
Thanks for your response
Then no - releasing money through this way does not rise to tax being due on the lump sum as its your money in your own property, its not investment income or eanred income.
Whilst not my remit (Financial advise) make sure you take independant advise before proceeding, as the rates in interest added onto the equity lump sum each year - can after as little as 10 years almost wipe out the whole cost of the property value.
Let me know if you require any further assistance with your question , or the answer I have provided.