George talks to Brent during the challenge

Laura, Brent and Emelia are this year's MasterChef semi-finalists

Laura, Brent and Emelia will compete in a service challenge for a spot in the finals

Emelia sweats it out in the kitchen in the semi-final service challenge

Brent preps for service

Laura prepares her dish for the semi-finals

The three semi-finalists battle it out in the MasterChef kitchen

George gives Laura some advice

Gary and George chat to Emelia while she cooks

Laura, the youngest contestant in the competition has proved to be a formidable foe in the kitchen

The judges discuss the contestants progress during prep

Brent experiments with liquid nitrogen

George reminds the contestants that time is running out

The special guests watch on as the semi-finalists battle it out in the kitchen

Matt and Gary taste the contestants' dishes

The semi-finalists wait to find out who are the finalists of this year's MasterChef

The eliminated contestants congratulate Emelia on her success in the competition

Emelia plays with fire

Laura finds out she is through to the finals

Laura and Emelia hug it out

It's been a tough cook off for the contestants

Laura and Brent, the 2014 MasterChef finalists