Big arguments on here and other places about permanent beds for Runner beans versus moving the trench every year. If the supports are strong and well preserved I would be inclined to leave the Runner bean ones in place and work on the soil.
Tomatoes really should not be grown in the same place every year, there are a lot of diseases and so on which build up very quickly in soil which would seriously affect your crop. Either use the supports for something else, Climbing French Beans? (much tastier than Runner beans anyway) or sweet peas or dismantle and move them elsewhere to fresh soil.
