As suggested check the small right angle plastic union with narrow bore hose attached which fits into left hand top side of radiator, shown removed below.
![[Linked Image]](https://www.tm-img.com/images/2021/12/01/P1080927.md.jpg)
If it's all dry around there though it's probably leaking from the bottom of rad where the plastic side tank interfaces with aluminium core - see below
![[Linked Image]](https://i.imgur.com/CQwe1X2.jpg)
Mulfab all aluminium replacement
here. Old rad can be slid down after removing hoses and fixings by lifting off cowl and fan. This latter item is re-used on new rad. Best if car on ramp or well jacked up at front though.