Very modern mistake spotted in Downton promo pics

The countdown to series five of Downton Abbey has begun - but as the characters prepare to enter the 20s, an unwelcome intruder from the future appears to have invaded the set.

A promotional shot of the Crawleys in front of their fireplace looks perfectly fine upon first glance.

But a closer look shows what looks like a plastic - and decidedly un-vintage - water bottle next to an ornate vase.

The image has now been removed from ITV's website.