Liz?

Cheryl since she still relevant after so many years and hasn't left the UK to forcus on US or any other country, she's the nations sweetheart. She's all over the adverts, magazine, tv, and she gets #1s with each album she's released

2 #1 albums 3 Words & Messy Little Raindrops

A Million Lights #2 blocked by Justin Bieber had a sell out tour

And Only Human #7 her under performing one (No promo)

Was apart of the biggest girl band in the UK

Had her own show ( a night in with Cheryl Cole)

Best seller in books
Perfume sales queen

I could go on

Marina is.

Poll added.

For me it's between Jess and Ellie. Both with #1 solo singles.

azealia

Rihanna obviously

Let's see if they manage a number one ablum in four different decades hihi.

Rihanna tho.

Foxes

Madonna followed by Rihanna.

Unfortunately Marina isn't as big as other female singers!

Which one?

Unfortunately Cheryl's last single peaked at #70, very low, especially after two #1s.

Spice Girls

Rihanna is huge in the UK, didn't LOUD sell like 1.6M there?

I think you shouldn't put Rihanna there, you should only put british acts. Jess should be up there too.

Please, only relevant singers this decade!

Jess is only during her 1st era, so I'm gonna say Ellie!

I was thinking about it, but Rita isn't from the UK, right? And I really wanted to include her, she's so massive there! Jess is here tho.

It was a ballad had a rubbish video and no promotion and she gave up on the album that was out moths before that single got released

Obviously the good sis Ellie - she had the biggest female hit of 2013 and 2015(SO FAR) in the UK, consistent critical acclaim for all her releases, consistently rising album sales (Lights sold around 800k and Halcyon (Days) sold upwards of 1M) her upcoming album is highly anticipated over there in the British Isles. Ms Goulding wins gurls