Pineberry Protection advice please?

Hello,

In the summer I purchased some Pineberry plants as well as some Strawbs as an investment for next season and would like to know how I can protect them through the winter as have also made 6 new plants of each from the runners (really chuffed as first attempt with these plants) Don't want to lose them in the cold weather and hear ground frost is on it's way

Original plants are in plastic troughs and newbies are coming along well in pots. Am still keeping them watered but not feeding them anymore.

Thanks in advance

 

Is there no one who can advise on protection over the winter at all? pretty please