Diarmuid Gavin and Morrisons

As well as promoting coffee, Gavin also appears in ads for Morrison's supermarket chain in the UK, fronting its 'Let's Grow' scheme which offers vouchers that schools can redeem for free gardening equipment.

Lucy Kennedy and Bord Gais

The pregnant TV presenter was the face of a campaign encouraging customers to switch their electricity accounts from ESB to Bord Gais. The campaign attracted 25,000 new customers to Bord Gais in its first week and it's estimated that around 130,000 householders have applied to change providers.

Celia Holman Lee and Viviscal

Holman Lee joined the likes of Lee Sharpe and Cheryl Baker of Bucks Fizz fame when she became the face of a nutritional supplement to prevent thinning hair.

Ronan O'Gara and Newbridge Silverware

As well as being associated with Samsung and Tesco, the rugby star was also the ambassador for Newbridge Silverware's 'Style for Men' collection and starred in a campaign with models Andrea Roche and Rosanna Davison.

Amanda Brunker and Slender Xcellerate

The novelist and model credits this supplement with helping her go from a size 16 to an eight. "Slender Xcellerate has helped transform my life, and I would recommend it to anyone who wants to lose some inches. Just stick with it for three months!" she says in the promotional material.

Clodagh McKenna and Super Valu

The TV chef was recruited as the face of the supermarket's 'Real Food' programme which encouraged people to cook real, simple food at home.

Chris O' Dowd and Meteor

The 'IT Crowd' star avoided the 'naff' pitfall usually associated with celebrity endorsement by making a funny and cool ad for mobile-phone company Meteor

Linda Martin and Moneypenny Financial Services

The Eurovision winner and 'You're a Star' judge advertised the benefits of consolidated loans.