Exactly
@Dark Traveller you'll have 5 years at £18k before you reach 67. Which is £90k.
If you hold off until 67 then you'd need to live until you're at least 85 to 'break even' and that's before considering the tax savings you'll get by taking it early. Assuming you have no other income, that'll save you almost 20%. So really you'll need to live until 92 to 'break even'.
People often misunderstand the 'penalty' for taking a pension early. It isn't a penalty, it is generally the same amount spread across a different time frame.