meter tails

Just noticed this on my Henley block between my meter and my consumer unit. Tails on left are to consumer unit, tails on right are to electricity meter. I am unsure if the tails have worked lose over time due to never being tightened up properly in the first place or this has always been like...

Ok I’ll just say I am a electrician but I’ve been out of the uk for quite a while so not sure on full rules regarding this. I need to relocate my board too around 5m away from the meter the run would be up the cavity to where the board currently is (Which will be getting patched over) then...