Baked new potatoes with dressed crab & celery salad

For the potatoes
400g large Jersey Royals or new potatoes
2 tsp light olive oil
2 sprigs rosemary, bruised
2 cloves garlic, crushed

For the filling
200g pack Waitrose Orkney Crab Layered With Egg
100g pack Seafood & Eat It Cornish White Crab
1 tbsp very finely chopped chives
1 tsp fresh lime juice
Celery salt and ground white pepper, to taste
1 pack essential Waitrose Salad Cress, cut
For the side salad
1 tbsp lime juice
2 tbsp light olive oil
200g celery (roughly half a pack), washed and very finely sliced
100g little gem lettuce, thinly sliced
1 salad onion, very finely chopped
¼ x 25g pack flat leaf parsley, very finely chopped
½ ripe avocado, stoned, peeled and sliced