Posted: 14/11/2015 at 16:55
Yes, cut back the longer stems by a third to a half now to reduce possible wind damage. Leave the serious pruning and shaping till spring.
In Feb or March, when the worst frosts are over and none is forecast for a few days, cut out all dead, damaged and spindly stems to their base. For the remaining stems, cut each one back to an outward facing bud, cutting just above and at an angle so that raindrops don't sit on the wound and encourage rotting. Leave the centre of the rose as open as possible as this encourages air flow and reduces the risk of disease.
When done, feed the plants generously with slow release blood, fish and bone and/or a specialist rose food. Mulch the roots with some well rotted garden compost of horse manure if you can get it and give occasional liquid feeds of rose or tomato food from March till the first flowers open. Keep dead-heading all spent flowers throughout the season to encourage new buds to form and your roses should keep flowering into November or December depending on the weather conditions.