Rodentopia
Adult Guinea Pig
If you look in the supermarket in the cabbage section where they also have kale you should see spring greens, they are fairly cheap around 75p a bag for two stalks. Never feed frozen always fresh vegetables. Beans are dwarf beans again available in all super markets again fairly cheap 50p a bag in asda. Lidl sells fresh green beans as seen them in there 
Mine have celery daily, cucumber, peppers and spring greens or lettuce mix (not iceberg). They then have a alternate mixture of carrots, beetroot, parsnip, turnip, green beans, broccoli, baby corn, sweet corn and leaves when in season, pea pods, sugar snaps peas, kale, herbs, fruit (twice a week alternate between tomatoes, apple, orange, pear, berries melon they have more frequently). Key is moderation with some items
Mine have celery daily, cucumber, peppers and spring greens or lettuce mix (not iceberg). They then have a alternate mixture of carrots, beetroot, parsnip, turnip, green beans, broccoli, baby corn, sweet corn and leaves when in season, pea pods, sugar snaps peas, kale, herbs, fruit (twice a week alternate between tomatoes, apple, orange, pear, berries melon they have more frequently). Key is moderation with some items