UK- U.S. talks on building up military presence in Gulf ongoing, says Britain

LONDON (Reuters) - Discussions between Britain and the United States on building up their military presence in the Gulf are ongoing, Prime Minister Theresa May's spokeswoman said on Friday amid tensions with Iran.

Relations between Tehran and the West have been increasingly strained after Britain seized an Iranian tanker in Gibraltar and London said the British Heritage, operated by oil company BP, had been approached in the strait between Iran and the Arabian peninsula.