The 55UF8509 features OLED technology. Most of the other TVs that have been on the market for a comparable time to this TV also feature OLED technology.
Alternative TVs which feature OLED technology currently available that you might want to consider include because of their better review scores, the OLED55B6V, or the OLED55E6 (£1,899.99) both from LG.
There are a number of alternative televisions which also feature OLED technology that you might want to look at including the Panasonic TX-65CZ952 (£2,700).
What is OLED technology?