She may be on a quest to conquer America, but Posh’s documentary has left viewers cold on both sides of the Atlantic.

In the UK, Victoria Beckham: Coming to America was watched by 3.5 million on ITV1 on Tuesday night – 19 per cent of the entire TV audience and one million less than those who watched a repeat of BBC1’s Waking the Dead.

Coming to America was the only non-repeat on the major US networks at 7pm on Monday, but ratings showed that it tied for second with repeats of CBS sitcoms behind a repeat of ABC’s Wife Swap. Less than five million people watched it.

Posh said in an interview with the NBC network after Victoria Beckham: Coming to America had screened. “I’ve watched some of the footage back and I realised. I thought I was really normal, but I’m quite eccentric!”

The former Spice Girl admitted she found it hard to sit through the footage.

“It’s hard watching and listening to yourself – I found it quite tough,” she said, echoing the thoughts of many TV viewers who also sat through it.

“But I think the good thing about the documentary is it really shows me. I don’t take myself too seriously and I like to have fun. The day I stop having fun is the day I stop doing what I do. I just really enjoy myself and that comes across.”