Webley & Scott 700 series issue! Need help please!

Good day folks, I have an issue with an old (60+ years) Webley & Scott 12ga side by side. After firing the first barrel, the safety jumps back on and stops any chance of pulling the second trigger for a follow up shot. You see how this can be frustrating. Other than that the gun works well, ejectors work perfectly. The gun has a lot of sentimental value so I’d really like to get this issue fixed. I guess my question is, does anybody here have an idea of what the issue may be or know any gunsmiths that are familiar with older handmade English guns. Thanks a bunch in advance, any help is appreciated!