If you using frozen sweet corn, pour the corn in a microwave safe dish with enough water to cover; and enough room left for the water to boil without spilling Place in the microwave and heat for 5 mins. Bring out and pour in a colander to drain. Keep aside to cool.
If using canned sweetcorn, drain in a colander and keep aside.
Pour the baked beans in the colander to drain.
Slice the onions thinly. Soak in a bowl of cold water with some salt. Leave for 10 mins then drain.
Wash the all the vegetables. Grate the carrots. Slice the lettuce. Slice the tomatoes.
Cut and remove the seeds from the cucumber.
Add all of the ingredients into a bowl. Tear the dill and spread over the top then refrigerate.
Bring out of the fridge when you are ready to use. Serve and add the dressing to the served portion.
The nutritional information is for a portion of the salad without any dressing. Final figures will be determined by which dressing you use and how much of it you use.