Heard a very strange call in the garden just now. Couldn't get a visual but captured the sound, which was so unique I'm hoping someone can ID it.
It's pretty obvious which one it is as it's the loudest call. There's a 3 call, then a 2 call then a 3 call. If I was to describe it I'd say....star wars lazer beam?!
https://youtu.be/BfLTLkGzZgc
I think it's probably the "pink, pink, pink" call of a Great Tit.
Play this audio clip
The trouble with Great Tits is that they have a whole variety of songs and calls of which the "teacher, teacher ... " one is the most recognisable one.
There is a bit of distortion in the recording itself (listen around 11 or12 seconds, there is a bird song that is definitely chaffinch, but sounds strange) so ithere probably won't be an exact match with any recordings that you'll find online.
The calls here: https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/long-tailed-tit/ seem to match pretty well, and coupled with the high-pitched sounds in the recording still sounds like long-tailed tit to me. I don't know what is making the call so loud though..!
The 'lazer beam' call is definitely a Great Tit, not quite the 'pink, pink' Chaffinch like-call Teejay linked but a regular call (if one of the weirder sounding) that Great Tits make.