Opioids have gotten a pretty bad reputation over the years, and frankly, I think they deserve it. But it’s good to remember that not all kinds of pain medication are opioids. There are plenty of over-the-counter pain medications that are not based on any Opium-derivatives and that can help relieve chronic pain to different degrees. Tylenol, ibuprofen, and naproxen are all good examples.
As for non-pharmaceutical options, that will depend on the pain. Certain plants and herbs can relieve pain when consumed as a tea or applied directly to the afflicted area. You may also be able to get pain relief from a massage parlour Manchester such as https://www.ladybirdsweb.co.uk/. Massages can be particularly effective on muscle-based pain and are often used by athletes recovering from various injuries.
Finally, alternative treatments can “relieve” the pain by simply changing how you perceive or react to it. Meditation and medical hypnosis are two common examples.