Dockyard will “go dark” tomorrow night to help raise awareness about the environment.

All unnecessary lights in the Royal Naval Dockyard will be turned off for an Earth Hour event.

The event will feature a “Pre Earth Day Expo” with face painting, glow henna, a range of vendors and displays from Greenrock.

The West End will be lit up by a 5K Glow Fun Walk and Run at nightfall, along with a Yoga Glow Flow hosted by Lucky Elephant.

Restaurants are also taking part in the event.

Anchor Restaurant Bar and Lounge will dim its lights to offer a candlelit dinner and a sustainable food menu with codfish and local produce.

Café Amici will also offer dinner by candlelight and Bonefish Grill will feature a DJ during the fun run.

A spokesman for the event said: “To reduce waste, plastic water bottles and single use glow products will not be allowed.

“With this in mind we encourage all participants to use reusable glow products to light themselves up during the event rather than single use products that will become waste after the event.

“This year we have a selection of reusable glow products for sale on the registration website and our hope is that with these options we can reach our goal of making the 5K Glow Fun Walk and Run waste free.”

A range of musical artists are scheduled to perform, including Riva, Christina Frith and Rated E.

A ferry service will be available to and from Hamilton, with a ferry leaving Hamilton at 6.30pm returning from Dockyard at 10pm.