redcurrants or lack of?

Redcurrants fruit on older wood so they should begin to crop next year. Likewise your blueberries, they just need time to establish. This is why redcurrants are spur pruned, cutting out all the new growth down to one inch stubs inducing the plant to produce fruiting spurs. Growths you want to retain to extend the bush can be pruned by two thirds.

When I first took on my plot the top growth on the existing redcurrant bush was dead. It has taken a couple of seasons to grow back from the base and I expect a crop next season.

I too bought a redcurrant bush from a reputable supplier that I thought looked mature enough to bear fruit but nothing this year although next year it should bear fruit. It's the same story with a chandler blueberry I planted at the same time, a small bunch of blueberries this year and many more next.