BACK at work and smiling after one of the most gruelling of physical challenges of her career is personnel officer Sarah Gregory.

Sarah, who works for Babcock HCS, at RAF Leeming, successfully completed the London Marathon and in so doing raised a total of £1,500 for the Outward Bound Trust.

She completed the run in four hours 40 minutes without sustaining any injuries, dehydration or blisters.

Sarah competed in the Great North Run last year and for the past six months has been training hard to take on the London challenge.

She now hopes to run again next year to raise money for Guide Dogs for the Blind.