Last date we will post out to get to you for mainland United Kingdom for a telephone order is Wednesday the 19th Dec 2018. This means the last day to order for Christmas will be Tuesday the 18th of Dec 2018. I can fit Pulse to tone units on the day they are ordered. Please don't leave it this late as if we get over run we will not be able to do this. If unsure call us to confirm before making your order. If international posting is required contact us prior to ordering please.