The last thing on anyone's mind is their roof, we know this. There's hundreds of other things to worry about in life than pulling money out for a new roof. Unfortunately for everyone, there comes a point in your life (and your roofs) where it must be done. Roofs take an unmeasurable amount of punishment when it comes to British weather, ranging from Arctic Blasts, which we're all too well familiar with, to blistering temperatures through those rare British heatwaves. Roofing materials in the UK are up there with the best and the durability of our tiles and slates are very impressive, however they are not       indestructible.  Repair work can only take you so far in protecting your home, its great for saving money in the short term but as time goes on, more and more repair work is required which works up quite the cost.   Eventually this repair work ceases to serve any purpose and you will be paying money to contractors just to delay the inevitable.  
Now it's not all doom and gloom, research shows that a new roof can increase the market value of your property to around 10%, meaning the small investment you make into protecting your biggest asset can potentially make you financially better off; also having your roof renovated will increase the Energy Efficiency of your home greatly. Around 75% of heat from your home is lost through your roof through bad insulation and poor roofing materials