@wesleybrian Cheers! It's a good 7ft+ tall now & on Steve's advice @lamaisonbleueoleron I dug it up & shifted it to the greenhouse. Apart from protecting it from the frost, it may also prolong the season enough to get it to flower, as they are very late to flower in UK conditions.
@keely. It surprised me how well it grew. It was only about a foot or so night when I planted it out in late spring. I have another on the go which is the same size as this was in the spring. Hopefully, an Indian summer in the greenhouse with prompt it to flower, fingers crossed. 😊