New fountain lights in Trafalgar Square

The new fountain lights Photograph: Zak Hussein/PA

The new fountain lights Photograph: Zak Hussein/PA

White lights up the fountain Photograph: Zak Hussein/PA

They come in purple too Photograph: Zak Hussein/PA

Bright purple lights Photograph: James O Jenkins

New multi-coloured lights in Trafalgar Square fountains Photograph: James O Jenkins

Pale blue fountain lights Photograph: James O Jenkins

Fountain spouts high, in pinkl Photograph: James O Jenkins

The fountains glow green Photograph: James O Jenkins

The lights glow bright red Photograph: James O Jenkins

The control room for the Trafalgar Square fountains, under the square Photograph: Felix Clay

Coins in the foreground represent a year's worth of coins removed from the fountains during the restoration Photograph: Felix Clay

2008: A fountain in Trafalgar Square before the restoration work Photograph: Linda Nylind

Passers-by dip their feet in a fountain during a hot summer Photograph: Ian Waldie/Getty Images

1973: Pigeons hover over one of the fountains Photograph: Harris/Fox Photos/Getty Images

1966: Supporters celebrating England's World Cup victory Photograph: Central Press/Hulton Archive/Getty Images

1945: Trafalgar Square with the two fountains in operation Photograph: Hulton Archive/Getty Images

1930: People gather around the fountain in Trafalgar Square Photograph: K Urban/Scheufler Collection/Corbis

1925: The fountains in Trafalgar Square Photograph: E Bacon/Topical Press Agency/Getty Images