A quick google and it is a Fraser Nash BMW,
From wikipedia
"
Frazer Nash was a British
sports car manufacturer and engineering company founded by
Archibald Frazer-Nash in 1922. It produced sports cars incorporating a unique multi-chain transmission before the
Second World War and also imported
BMW cars to the UK. After the war it continued producing sports cars with conventional transmission until 1957. It also continued selling BMW cars and motorcycles and finally in 1956 became the official importer of
Porsche cars."
Found this info on this car,
"The Frazer Nash – BMW 315/1 manufactured in 1936 and driven by Oliver Penney. The engine is a 1490cc, the car was shown at the 1935 Motor show."