Yes, this is a common feature of many British English accents.
The 'l' sound is fully released before a vowel (a 'clear/light 'l' as in 'like') but when it comes at the end of a syllable (a 'dark l' as in 'all'), the 'l' often sounds more like a 'w'. Just listen to how the announcer says 'Council' at the very beginning of the recording.
By the way, a common mistake among Russian speakers is to use the dark 'l' in all positions in English words. When English-speaking actors want to imitate Russian accents, the first thing they do is replace the light 'l' at the beginning of words with a dark 'l' and..... voila! You have a Russian accent.