Could be: Ball joints on bottom A-arm, castor rod bushes, tie rod (steering link to stub axle) ends, strut (shocks).
Jack the car up on the appropriate side following owners manual or workshop manual directions and common sense in order not to die. ie chock rear wheels, use proper jacking point, dont stand the jack up on bricks to get more lift, preferably put spare wheel under sill as life preserver, use chassis stands etc.
Leave the road wheel on for leverage and see where you can find play in the suspension shoving it with your foot if necessary with someone holding the steering wheel steady.
Next take the wheel off and use a large pry bar or wheel brace to lever on stub axle and find out what's going on.
Most suspension parts should be changed as pairs ie left and right side at the same time to preserve symmetry in front end.
Most parts are available as change overs to avoid having to press in bushes or you can take the parts to pedders and they'll supply the new bushes and fit them to the component for reasonable price.
Don't assume you can press in bushes with a vice, you might stuff them. Ball joints best done as change over A arm, comes with new bushes too that way.
If your struts are stuffed either get the work done or get a service manual and follow safety directions closely (rather than catch the spring with your face)
Good luck mate.