That's quite far from being a credible source. The author is being investigated by Met police for encouragement of terrorism, I would guess for his promotion of propaganda from Hezbollah and other terrorist orgs. At least on EI he's willing to write "Israel", rather than "the Jewish Nazi entity" as he says on social media.
Yes, critics of Israel are being silenced in the UK. Several journalists have been raided and/or arrested, as well as several citizens because of anti-Israel content online. A 77 year old woman reportedly had her house raided last night for sharing her views on Twitter.
https://www.thejc.com/news/met-police-reportedly-raid-home-a...