The third great little product I'm going to mention is the Boiler Buoy.  
It's a clever device which will protect your boiler from the problem of a frozen condensate pipe, keep the boiler running and avoid costly call-out costs. 


The Boiler Buoy takes away the need to cut the pipes and protects your central heating from damage in low temperatures. Here's a video from the manufacturer that explains what it does and how it is fitted -


Not glamorous perhaps, but a really neat and useful product that could save you a lot of money and hassle next winter!
I can supply and fit the Boiler Buoy, so to find out more, email me - or give me a call on 07968 124706 for free quote.