I was declared unfit for work seven months ago, but the company doctor said I could do a lighter job if the firm could find me one. I haven’t heard anything further: does the company have a legal obligation to find me alternative employment?
If the company has more than 15 employees then the provisions of the Equality Act 2010 may apply, which means that your employer may have to look at ways of keeping you working by making reasonable adjustments to your employment. If you have been employed more than two years you have the right not to be unfairly dismissed. I suggest you keep in touch with your employer, making it clear that you want to return and perhaps also suggesting work that you could do.