We don't really have enough information for that, Tom; different
ramblers and climbers require different treatment and nobody can guess
what rose yours is until it flowers.

IME, rootstock suckers from elderly roses often do have thorns, because
someone budded a slip onto a dogrose rootstock they dug from a hedgerow,
in days when very little else was available.

Janet.

OK. Thanks anyway
I will leave it for a year and see what I get.
Cheers
Tom