It is from The Battle of Evermore, by Led Zeppelin, from their untitled fourth album, which is usually referred to as Led Zep IV.
Gareth
The music in the current BBC Great Expectations trailer is an instrumental piece called "Outro" by M83.
Sigur Rós - Brennisteinn
''Paradise'' The Ronettes.
Friendly fires - Jump in the pool
Ellie Goulding - Lights
Is it Fever Ray? It is very lovely.
Erik Satie - Gnossienne No.1
It's 'Sing Sing Sing' by the BBC Band Orchestra
regards, w.
Its called Days Are Forgotten by Kasabian
school
It's M38 - Midnight City