Don't really know about the raspberries, this is only my first year of growing them.
It's advised that you replace your strawberries every 3 years or so, as the amount of fruit they provide peaks in year 2/3, and then starts to drop off, so you may want to think about replacing these. It's possible to get them to produce runners, by planting some of the longer shoots in compost, where they will root to make a new plant, they may have been doing this already.
I grow my strawberries successfully in pots, but as the pots are quite small (they're the stacking type to save space), you have to remember to supply plenty of feed, from the time they flower until they finish fruiting. Established strawberries have a very strong root system, so you may have to provide bigger pots, I'd suggest digging one up to see how big the root system is. Aldi are also doing big pots at the moment, think they're around £3 each, don't think you'll find them much cheaper elsewhere.