Stella Creasy, the Labour MP for Walthamstow, is a devoted fan of The Wedding Present, the Leeds indie guitar band whose songs of unrequited love led critics to hail them as natural successors to The Smiths in the late 80s.   Ms Creasy reserves a special place in her heart for Seamonsters, the band’s 1991 album, an unflinching collection of songs detailing the bitterness and recrimination of relationships gone wrong, set to a backdrop of grunge-era distorted guitars.   In what appears to have been a cathartic experience, Ms Creasy, a rising Labour star, has written an extended essay to accompany a vinyl 10” edition of the classic album, released next Monday.