Sometimes (most the time) the cheapest quote is never the right decision… a few points to look out for… 

• insurance. (Public liability insurance) 

• recommendations, References. Photos are not always as they seem. 

• do they have a work uniform? (Believe it or not it makes the tradesmen look more professional) 

• sign written van? Public profiles… (Facebook, Instagram, yell, Checkatrade… etc) 

•headed quotations with company address and logo?