Ellie Simmonds expecting a "really tough race"

Great Britiain's Ellie Simmonds is expecting a "really tough race" as she looks to defend her S6 100m freestyle title.

Simmonds qualified as the second fastest, with Victoria Arlen swimming a world record time.

"I think it's going to be a really tough race tonight, [Victoria] Arlen has just equalled the world record [of 1:14:74] so it'll be really hard," Simmonds told BBC Radio 5 Live.

"I had an awful night sleep but just going here today to try and enjoy myself. I do get extremely nervous and sometimes think 'why am I doing this.'

"I wasn't nervous today but there are lots of emotions I don't want the competition to end and I just want to enjoy this."

Simmonds has already won two golds at London 2012.