Two great deals for prospective Sim-Free Lumia 640 and Lumia 435 buyers in UK!! Lumia 640 can be purchased for a big discount of £50 on the official price of £169.99 from Carphone Warehouse and Amazon. You can buy one for just £119.99 from CPW and Amazon. Links below.
Lumia 435 is available for a PAYG price of £29.99 from EE. The best Sim-free price for Lumia 435 in UK is £49.99 at Microsoft store.