Hi Joanne,
It's my first year growing in pots too.
I'm trying, Tomatoes (several different types), Peppers, Chillies, Leeks, Beetroot (I'm trying Boltardy and Solist), Peas (Early Onward, I got my first flowers on them yesterday), Garlic, French Beans, Carrots, Raddish, Lettuce, Spring Onions, Leeks, Potatoes, Cucumber, Physalis (Cape Gooseberry and Tomatillo). I'm sure there's more that I've forgotten.
I want to also try Sweetcorn so I'm going to give that a go too.
It seems that there's quite a few on this site who grow successfully in pots, so it's worth giving anything a go.
Jo.