By Sruthi Shankar (Reuters) – Britain’s FTSE 100 closed higher on Monday as surging oil prices boosted energy stocks, although concerns about inflation and several broker downgrades kept a check on its overall gain. The commodity-heavy index rose 0.5%, hitting its highest level in more than two weeks, driven by gains in Shell and BP which both gained about 4.1%. These tracked a jump of more than $4 in the price of crude oil after news that European Union governments will consider whether to impose an oil embargo on Russia. [O/R] Glencore and Anglo American also rose as an Australia ban on expo…