If you can, move the rose when it’s dormant between October and February.
Before you start, dig the new planting hole where the rose is being moved to. Then it can be planted straight into it.
Prepare the ground well using well-rotted organic matter.
Cut the rose back to about 30-45cm and dig it up with as many roots as possible and as much of the long tap roots as practical. These tap roots are recognisable as they look like fangs.
Make sure that the roots never dry out between digging up and replanting.
After replanting, water it in well. Bear in mind that, if it’s a repeat flowering rose, it’s very likely that it will grow and flower later that year if you’re moving the plant in early summer. However, if it’s a once flowering rose it’s unlikely to flower until the following year.