Which is the best place in London to get some makeup?

[Teadrinker11]

Weird question but I'm visiting tomorrow and want to get some treats for myself and splurge for a once off. I know there's so many shops in the city where I can stock up, I love going into the likes of Selfridges or John Lewis for the atmosphere alone. Where's your favourite place in the city centre to buy makeup / beauty stuff?

Liberty has some brands that you won't find stocked easily, and it's round the corner from the big MAC shop on Carnaby Street and a Kiko on Regent Street.
There's a Glossier shop in the Covent Garden piazza almost opposite the Ordinary/Deciem shop and there's quite a few higher end stand alone make up shops in that area.
There's an Inglot on Oxford street.
Fenwicks is always good for an upscale browse.

Selfridges

Selfridges for me too

I always go to Liberty.

Selfridges or liberty, or harrods

Liberty

Covent Garden is fantastic for make up shops. I went into the Mac store and had a complete makeover. The staff were lovely.
I don't know if Lisa Eldridge still has a store there.