@adamboultonTABB John Thurso gave up his hereditary peerage to bevan MP.
There was an issue about life peers being elected as MEPs. @SarahLudford may know. There was a ECHR argument it was unfair to bar their election. Resolved by peers taking leave from HoL to serve in EP, IIRC.
🐦🔗: https://n.respublicae.eu/AntonyHookLD/status/1601874147742830592