@Callistemon21
Hi, no, it is not a sucker, it is definitely a rose shoo , a new one, very soft. I peered over the fence and could see it. I tried to get it from my side but the rose hedging is very dense, it is about 40 years old so I could not get my cutter in without scratching my arms to bits.
I have told her to tell her husband he will have to lift the fence panel so I can do the job properly, because if I just cut the shoot off, it will grow back again so I am going to cut the whole branch off. It will cause him more work lifting up the panel than just getting a pair of scissors and cutting the shoot off. I am too old at 81 to be lifting up a 6 x 3 ft panel.