LONDON, Feb 26 (Reuters) - British Deputy Prime Minister Dominic Raab said on Sunday he would resign if an investigation into his conduct upheld allegations of bullying made against him by government staff.

"If an allegation of bullying is upheld, I would resign," Raab told Sky News.

In November, Raab requested an investigation into two formal complaints about his behaviour. A month later it was widened to include five further formal complaints.