[Ian21401]

I'll try to describe it as I wrote it up in my log.
The flexi pipe and the rigid pipe join at a substantial steel bracket on the inner wing panel. The hexagonal end of the flexi (14 mms.) positively locates into a hexagonal hole on the bracket and is retained by a spring clip below the bracket. This clip is itself retained by the male union on the rigid pipe. (11 mms. ) Once the rigid pipe union has been loosened it should be possible to remove the spring clip and then the flexi pipe from the bracket. As suggesterd by kelvinp clean up the rigid pipe as much as possible to allow the union to turn and move along the pipe. I doused the whole lot with plusgas and invested in a set of brake flare spanners which kelvinp also suggests. Some patience and care should then work.