If you found this, you may already be aware of the BCS, formerly known as the British Computer Society, which is a professional body.
When I was graduating from university, I was offered one year of free membership with them, but I couldn’t find very much regarding whether people considered it worth joining. The only opinions I got were rather on-the-fence. So now that I’ve been with them for 11 months, I’d like to go into some detail of the whole experience and whether I’ll be renewing.