Here's a dapper looking drink to brighten even the most drab of dispositions.

Well-dressed with a dollop of caviar, this Seaweed Martini is a most luxurious twist on a dirty vodka martini, created by the Blind Spot team to celebrate world martini day this week.

Seaweed infused broken clock vodka has been stirred to perfection with dry vermouth and when one gets to the bottom of the glass a piquant salty morsel is patiently waiting as a reward.

And it's being served alongside two other tempting awfully english vodka martinis at this St Martins Lane speakeasy bar until the end of the month.