By Lars Mucklejohn Markets are bracing for full-year results from BP and UBS this week, while a slew of economic data will shed light on the performance of the West’s services sector. The oil and gas giant’s fourth-quarter earnings, due to be revealed on Tuesday, are expected to take a hit from falling gas prices and higher costs tied to the Red Sea crisis; triggered by Houthi rebel attacks on commercial shipping. Investors will look to see if new permanent chief executive Murray Auchincloss signals any change from his predecessor Bernard Looney’s strategy. The company is under pressure from a…