The Helpline 0808 800 0303 will be running a reduced service over the festive period.
Christmas and New Year opening times
Christmas Eve: 9am-1pm
Christmas Day: Closed
Boxing Day: Closed
Sunday 27 December: Closed
Monday 28 December: Closed
Tuesday 29 December: 10am-2pm
Wednesday 30 December: 10am-2pm
New Year's Eve: 10am-2pm
New Year's Day: Closed
Saturday 2 January: 10am-2pm
Sunday 3 January: Closed
Monday 4 January: 9am-7pm (back to usual opening hours)
Here's some tips for coping over the festive period http://bit.ly/1T3IAwm - if you have any tips please do share them too.