Back garden in Kingston upon Thames

Slightly out-of-control garden that needs some TLC. I have two raised beds which this year have produced abundant tomatoes, beans, chillies, chard and salad leaves. There's another bed that has had strawberries and raspberries, an area for herbs, and pots with more tomatoes and rocket. I need some help maintaining it, and to share the produce. I'm open to suggestions of what to grow and would appreciate someone reliable, who can put the time in, and who has a reasonably good knowledge of gardening.