A personal trainer who claims to have helped Gwen Stefani get into shape hit a woman so hard that she lost a tooth and was left lying unconscious in a pool of blood , a court has hard . Mike Heatlie , 42 , launched the violent attack on Fiona McCartney outside a nightclub in Edinburgh because she did not give him a cigarette . Heatlie , from Edinburgh , was once voted as one of the city 's most eligible bachelors and claims to have helped train Stefani before her 2009 U.S tour . At the time , she described him as 'Superman ' . Personal trainer Mike Heatlie , 42 , ( left ) , who claims to have previously work with Gwen Stefani , launched the violent attack on Fiona McCartney , 43 , ( right ) outside a nightclub in Edinburgh . But Ms McCartney is now facing a £7,000 dental bill and says she is too frightened to leave her home after being assaulted by the personal trainer . He pleaded guilty at Edinburgh Sheriff Court in March to the attack . He is due to appear again on April 22 for sentencing . Speaking for the first time about the attack , Ms McCartney , a legal PA from Greenbank in Edinburgh , said : ' I used to love going out on Saturday nights . But since the attack I have been very wary and like to be home by a certain time . ' I do n't like to go out to nightclubs now and I get very panicky in crowds after this unprovoked attack . ' I 'm on sleeping tablets from a doctor because I do n't sleep at all . I still have this constant reminder and feel I ca n't move on because I still have the injuries from that night . I 'm reminded every day of this attack . ' Ms McCartney said the incident unfolded after Heatlie approached her while she was with a friend outside The Jam House club in March last year . The Edinburgh-based trainer apparently worked on and off with the No Doubt singer ( pictured ) since 1997 . A testimony which claims to be from Stefani appears on Heatlie 's website , which describes him as 'completely passionate ' and a 'wonderful motivator ' He asked the pair for a cigarette but neither woman had one to give him . He then lashed out and punched her , she said . Ms McCartney said she still suffers from numbness and aching in her mouth . She is also due to have expensive and painful dental work , over the next few months . Heatlie ( pictured above ) pleaded guilty at Edinburgh Sheriff Court to the attack . Speaking about the incident , Heatlie said : 'This was an unfortunate incident that occurred last year . ' I have been in touch with Ms McCartney and the situation is now very amicable and both parties , I 'm sure , would like to move on from it . ' In a text message , which Ms McCartney said had been sent by Heatlie to her partner , the trainer wrote : 'Please pass on my sincerest apologies to your partner Fiona , I wanted to get in touch but obviously could n't with the case proceedings . 'This incident , that I have virtually no memory of , has turned my life upside down and I ca n't imagine how it has impacted Fiona 's . ' I am so sorry , this is completely out of character for me , I 've never been involved in a violent incident in my adult life . ' Heatlie used an endorsement from Stefani to help promote his new studio when it opened six years ago . At the time , she described Heatlie as being 'completely passionate about health and fitness ' . She said : ' I ’ m so happy for Mike that he ’ s opening his own studio . I know it will be a huge success . I can ’ t wait to start working with him again in preparation for our summer tour . 'Mike is completely passionate about health and fitness and is a wonderful motivator . 'He is tireless , compassionate and makes working out something to look forward to . He is the Superman of my tour . '
Mike Heatlie , March last year , punched Fiona McCartney outside Edinburgh nightclub . She is facing £7,000 dental bill and says she is too scared to leave home . Heatlie pleaded guilty at Edinburgh Sheriff Court to attacking 43-year-old . Stefani previously described trainer as a 'tireless , wonderful motivator '