[6][7][8] Vocalist Hannah Reid and guitarist Dan Rothman are originally from London[11] and met in the Ancaster Hall student residence at the University of Nottingham during their first year in 2009.

They were joined by Northampton native Dominic "Dot" Major (keyboard, djembe, drums) a year later, after he began playing music together with Rothman.

[5][10] They soon found themselves noticed by a number of A&R people, and they were signed with the Ministry of Sound while Big Life took over the management duties in the second half of 2013.

On 12 November 2012, the trio posted their song "Hey Now" remixed for Sasha by The Cut on YouTube; it immediately received a huge amount of attention.

[21] On 26 January 2014 the bands rising success in Australia was recognised in Triple J's Hottest 100 countdown for 2013, with "Strong", "Hey Now" and "Wasting My Young Years" placing 10th, 35th and 61st respectively.

[22] On 1 April 2014, the Official Charts Company announced that London Grammar's If You Wait was the fifth top-selling album of 2014 so far, with sales of over 138,000 copies (356,000 total).

[23] London Grammar won an Ivor Novello Award in the Best Song Musically and Lyrically category for "Strong".

[25] On 2 September 2014, French fashion house Dior released an advertisement campaign for J'Adore that featured the song "Hey Now" (The Shoes remix).

On 1 January 2017, London Grammar shared the single "Rooting for You", marking the group's first new music since their debut album in 2013.

[31] During the autumn of 2017, the band's cover version of the Chris Isaak song "Wicked Game" was used in the trailer for the BBC series Peaky Blinders.

[36] On 19 March 2024, London Grammar teased the release of their fourth album on their Instagram page, showing a white background with a blurred image of a bee.

This was confirmed as an album tease by Reid on her personal Instagram (@hannahmayreid) on 20 March 2024, when she posted a photo of her new haircut and baby with the comment "Entering my mum era with bangs and brown hair.

London Grammar's music has been described as "a blend of ambient, ethereal and classical sounds"[38] with melancholy guitar, soaring vocals, plaintive lyrics, and often displaying trip-hop and dance influences.

Hannah Reid's powerful, haunting vocals – prominent on all of London Grammar's tracks released to date – are often compared to those of Judie Tzuke and Florence Welch.