the RHS says
Pruning group 8. Tolerates hard renovative pruning but regrowth of horizontal tiers may initially be upright. Some vigorous upright shoots may need removing.

there is more info if you search pruning group 8.

Thank you Eileen.

We never pruned ours as it never got big enough to need it before dying!

Thanks Owd. My OH is keen for me to remove the central upright growing branch, but I feel that that would make the shrub bush out more sideways so I’m leaving well alone ... at least until next year 🙂.

Thanks Klahanie ... I absolutely agree with you!