This is a cover, beautifully done by the BBC boys. It's finger picked by Jack (the only
part). If you pick the E string with your thumb, and use your fingers for the rest of
notes it should be fine and easy to play.
Just repeat this 8 bar riff throughout the song.
[ Tab from: https://www.guitartabs.cc/tabs/b/bombay_bicycle_club/swansea_tab.html ]
E-------------|-------------|-------------|-------------|
B-------------|-------------|-------------|-------------|
G-0-----0-----|-0-----0-----|-0-----0-----|-0-----0-----|
D---0-----0---|---0-----0---|---0-----0---|---0-----0---|
A-----2-----2-|-----3-----3-|-----5-----5-|-----5-----5-|
E-3-----3-----|-5-----5-----|-7-----7-----|-7-----7-----|
E-------------|-------------|-------------|-------------|
B-------------|-------------|-------------|-------------|
G-0-----0-----|-0-----0-----|-0-----0-----|-0-----0-----|
D---0-----0---|---2-----2---|---0-----0---|---0-----0---|
A-----7-----7-|-----2-----2-|-----2-----2-|-----2-----2-|
E-8-----8-----|-0-----0-----|-3-----3-----|-3-----3-----|
what a way to end an album, eh?