UPDATE 1 — UK Stocks — Factors to watch on October 13
(Adds new items, updates futures) Oct 13 (Reuters) — Britain's FTSE 100 index is seen opening higher on Tuesday, with futures up 0.4%. BP: BP expects to report $3 billion to $4.5 billion of impairments in third-quarter results, relating to its gas and low-carbon energy segment, the oil major said. WHITBREAD: Whitbread