The Gallaghers' return for a fourth series, and its Lip's 18th birthday but not all is going to be clean sailing as there’s a few surprises ready to hit him. First the Maguires expect him to do someth...ing for them. But the biggest shock of all is his long-lost mother Monica turning up out of the blue with a bombshell that could turn their lives upside down. more

• Paul Abbott

• James McAvoy
• Steve Pemberton
• Maggie O'Neill