Oil companies lead Britain's FTSE lower as crude prices fall
* FTSE 100 down 0.2 pct * TUI adds 2.7 pct to Thursday's 6.6 pct jump * ARM helped up by positive Barclays note (Recasts, updates prices) By Liisa Tuhkanen LONDON, Aug 14 (Reuters) - Britain's top equity index edged slightly lower on Friday, with a decline for commoditie
