Q.best time to repot fig tree
We have a small Brown Turkey fig we need to repot in a larger pot. When is best time to do this? Also, we always had tomato seed Cherry Belle from Dobies, but they cannot supply in future. Can you advise another supplier?

I would repot the tree in late winter or early spring while the tree is still dormant, but you can repot figs at any time if you are careful.
As for the seeds, I would recommend doing a local search in your area to find any retailers or even mail-order catalogs. Your local garden center may also be able to help. You can also check out eBay. In my experience, eBay is actually a great place to find unusual plants/seeds. Just check the feedback on the seller before you buy.