Here in the U.S., what you call runner beans are, I suspect, our pole beans. They vine up a pole rather than on a bush. Here, the pole varieties tend to be much longer than the ordinary bush bean. That makes for a very good spicy pickled bean home canned recipe as seen here:
Ingredients:
3 lbs Young green beans
4 long, thin Red chiles (fresh or dried)
4 large Garlic cloves
1 tbsp Peppercorns (white, black, green or a mixture)
1/4 cup loosely-packed fresh dill sprigs (or 4 tbsp dried dill weed)
2 1/2 cup Water
2 1/2 cup White wine vinegar
1/4 cup Salt
How to:
Trim and remove strings from the beans. Rinse well and set aside.
Sterilize jars and lids in boiling water. When jars are cool enough to handle, fill each upright with beans until they are snug. Insert chiles and garlic cloves (preferably around outside so they can be seen). Divide peppercorns and dill among jars.
Separately bring the water, vinegar and salt to a boil in a non-reactive sauce pan. Ladle the hot brine over the beans leaving about 1/2-inch head space.
Wipe jar edge clean and screw on sterilized lid and band according to manufacturers instructions.
Process in a boiling water bath for 12 minutes. Remove and allow to cool completely at room temperature away from drafts.
Check lids to make sure proper seal has been attained.
Store for at least one month before using to allow flavours to develop.
They're very attractive with the red chiles showing through and we give them as Christmas gifts each year as well as eat 'em...