It seems 1904 is pretty close. At about 0:35 there is a poster outside the Police Station with the headlines JAPAN and RUSSIA in bold underneath.
There was a major war between Japan and Russia in 1904 and 1905 when the Japanese blockaded and defeated the Russian Navy at Port Arthur Manchuria.
Also the switchback/roller coaster shown at the end was designed by an American called Thompson who patented gravity switchback rides (early roller coaster) famously at Coney Island, New York and throughout Europe.
The one at Folkestone was built/opened in about 1888 - 1891 and closed in 1919/20.
The open topped car/bus/coach (shown with its very early number plate D285 ) - an early form of charabanc - also fits the Edwardian timescale.
The swimwear seems a little less cumbersome than the Victorian era too and fits in with the Edwardian (1901 - 1910) period.
Looks as though 1904 is spot on to me.