Apparently a Land Rover hit my granny's car and it's not half as bad as it sounds (see photos).

Going to order a new DRL and generic license plate holder.

Any bonus tips about cleaning the white paint?

It's a 2015 Panda Pop 1.2

Can't really see the extent of damage in the photo, but if it's a scrape on the paint, then t-cut or a similar abrasive usually does a good job of getting rid of superficial paint or bumper marks from another car so you can see exactly what damage has been done to the underlying body/paint.

Chipex makes little paint-match kits which work very well on small scratches and chips and with practice and care can disguise small areas of damage.

Otherwise a 'Smart' repair (Chips Away etc.) is very good but it's prob going to cost you £100 or so.

It's so hard to photograph. Literally only the lens is half cracked

There is a case for leaving small damage untouched, after all if it's not going to cause rust, it is just a 'battle-scar' making the car more original! Think tattoos or body piercing

The DRL unit is fitted from the rear of the bumper by three screws. You should be able to access via the removable 'door' inside the front wheel arch. Turn the wheels to full lock to the right to give better access. Two screws hold the door/flap in place. There's another post somewhere which shows this door - use the 'search this forum' link and search DRL...

And you'll find this post: https://www.fiatforum.com/panda-iii/441762-side-light-lens-cracked.html?p=4193388