Fish finger wraps

Name: Fish finger wraps
Ingredients: ½ tbsp olive oil; 3 thick white fish fillets, such as cod or haddock (about 400g total); 50g plain flour; 100g panko or dried breadcrumbs; 1 lemon, zested (reserve the juice for the tartare); 1 small dill sprig, chopped (or use 1/2 tsp dried oregano); 1 large egg; 6 tbsp mayonnaise; 1 tbsp finely chopped gherkins; 1 tbsp finely chopped capers; 1 ½ tbsp finely chopped dill; 1 ½ tbsp lemon juice; 4 tortilla wraps; 1 cucumber, peeled into long ribbons; 1 romaine lettuce, shredded; 4 ripe, juicy tomatoes, sliced; 1 lemon, quartered