This only deserves inclusion because of where I found it...in the middle of Birkenhead on an abandoned industrial railway track.
It's Orobanche alba. It was a few minute's walk from Prostitute Street (known to the Post Office as Corporation Road) and the smackheads' haunts. It's a good botanical area. Common spotted orchid should be there soon. I'm hoping for bee orchid, which has spread on the Wirral in recent years.