Low growing plant with mauve flowers and inflated sepal-tubes.
No interactions present.
....looks like Limax tenellus but this is not that common. would be a good posting on it's own.
Thanks for the id.
I've sent an email.
I don't think it fair to post the slug with this acidification under my name. Perhaps you would like to do so.
Lat/Lng: 50.5861, -3.9057
OS grid ref: SX651779
Damp but not boggy.