the uk market is closed. The order will be fulfilled at 8am, are you trying to buy one share or just invest £75 into the market? Because VWRL is a fractional share, you can either invest any money you wish.
This will give you a chance to own a fractions of a share…for example 1.5 shares. With £75 you may only get 1.01 of a share, or if the price goes higher you may only get 0.85 of a share.
As I have mentioned before please do some research dude.