@gingagibbs - you can move plants within the EU. I have brought plants back from many travels within the EU - you can also bring seeds and cuttings back from outside the EU.
@ Anthony Jenkins - a heated greenhouse/conservatory is fine for the Jacaranda and Echium (it does kind of look like one before the flower forms though I am not sold that it is Echium). Echium wildpretii might be grown outside as long as it does not get below -5C in you locale and in well drained, sheltered spot - they get big, certainly some Echium like Pininata can grow and flower in the UK (10ft by 4ft!).
Jacaranda, unless you have a huge greenhouse then it will not get to flowering stage in mainland GB as you will need to prune it to overwinter it inside
The Banana - only a few Ensete can withstand an unheated greenhouse, even with protection and even they lose their leaves. Hopefully you got an Ensete - post a picture and we can ID. Most other Musa needs indoors over winter.