Yes - but only where:
- the age groups concerned suffer from disadvantages because of their age, and
- you 'reasonably expect' your action, in encouraging them to take advantage of employment opportunities, to prevent or compensate for these disadvantages.
The conditions under which such positive action is allowed are very specific. You could not use them, for instance, to recruit from only one age group, or to exclude applications from another age group. To do that without falling foul of the law, you would have to be able to justify your actions through the general test of objective justification (see question 27, below).
If in doubt, take advice.