what it it?
wild mustard or charlock or oil seed rape or one of those
Nut I was just going to say charlock or similar ...
Something that fits in the 'structural' category
Not an asset in a garden I fear - https://www.gardenorganic.org.uk/weeds/charlock
Thanks guys, I knew I could rely on the Gardeners World members, to solve this identification issue.
It's in the bin tomorrow.