Jeremy is a Liberal Democrat working peer and one of the youngest ever Life Peers. He was elected to the Scottish Parliament as the youngest constituency MSP, aged 29. He served two terms in Holyrood as MSP for Tweeddale, Ettrick & Lauderdale. The seat no longer exists owing to boundary changes.

During his terms in Holyrood he served as the Scottish Lib Dem Shadow Finance Secretary. In 2011-12 he chaired the cross party Devo Plus group writing their proposals for the future of Scotland.

He was born in Berwick-Upon-Tweed in 1974, studied politics and history and remains committed to the Scottish Borders. He took the title Tweed after his native river; being born at its mouth and representing its source in his former constituency.