Looking at this from the venue/chefs point of view this is whats actually in season in the UK. Anything here that both you and your partner enjoy?
Fruit: Blackberries, Blackcurrants, Blueberries, Cherries, Gooseberries, Greengages, Loganberries, Raspberries, Redcurrants, Rhubarb, Strawberries
Vegetables: Aubergine, Beetroot, Broad Beans, Broccoli, Carrots, Cauliflower, Chicory, Chillies, Courgettes, Cucumber, Fennel, French Beans, Garlic, Kohlrabi, New Potatoes, Onions, Peas, Potatoes, Radishes, Rocket, Runner Beans, Samphire, Sorrel, Spring Greens, Spring Onions, Summer Squash, Swish Chard, Tomatoes, Turnips, Watercress
I hear you love your carbs but guests might prefer a reasonably light starter in high summer, especially with a roast to follow. Are eggs ok for both of you? Perhaps a variation on salad nicoise? If not, a roasted vegetable tart with leaves and small potato salad?