hi...if i am going to guess...and it honestly will be a guess...then i would suspect that you have a "mal-adaptive flexion control problem" cause strain to your posterior elements of the lumbar spine.

In other words, you like to bend your back too much and not your hips.

Instead of bending over and loading the strong leg muscles that God gave you, you prefer to use your back and "hang off your ligaments" so to speak.

As you are in Ireland, i don't any movement retraining physios there but i have irish connections...can you tell me where in ireland you are? Otherwise going to Yoga or a good Pilates studio would be helpful.

It is very difficult to teach you this online. You must be selective in who you choose to treat you. They should know what a flexion control problem is as the terms are used in research by Peter O''Sullivan and those trained like i am will know what that means and how to treat it.

again i am guessing but i hop[e that helps. Perhaps stretching your piriformis might help. Who knows? What we do know is that since nothjing is "damaged" you have a good shot at retraining your habits which is likely to help you a lot...these include ytour posture in standing, sitting, bending over etc as well as they way that you move and do things.

Good luck. If you let me know where you are, i can possibly ask my irish friends about who might be able to help you

Cheers!