Steptoe & Son have to be in here some where.

old English comedy TV series about a father and son scrap metal dealers

One of IceReefer in happier times just a couple of years ago in Dundee docks on the link, Very surprised she is no more as she looked god for a while longer.
http://www.shipspotting.com/gallery/photo.php?lid=1214355

SARAH STAR: Sietas Type 83d, built 1978 as HILDEGARD WULFF for Hermann Wulff, Hamburg

Sarah Star, another fine Sietasvessel getting recykled, sad sight, but thats life.

Well done Ralph. That was the only one that eluded me. Cheers!

So, we have (from left to right):

tug PANTANASSA (IMO 7741861)
reefer ATLANTIK FRIGO (IMO 8617914)
reefer ICE FERN (IMO 8818972)
ferry (or what's left of it) PRINCESS VICTORIA (7901746)
reefer ICE FIELD (IMO 8615239)
gas tanker HÜMA (IMO 7126164)
cargo/container SARAH STAR (IMO 7726926)

Phil, she's the SARAH STAR (IMO 7726926)
Source: http://merseyshipping.blogspot.com/2012/02/ship-demolition-report-1612012.html

I'm struggling to identify the blue-hulled singledecker on the far right of the photo "S... Star", perhaps?

Any other clues, apart from the fact she looks like a late 70s German-build?

Yes Max, it is them. They aren't that old indeed (less than 25 years), but the traditional (smaller) reefer is on the way out unfortunately. Lots of late '80s/early '90s vintage reeferships going for scrap lately. Some of the wonderful reefers from the Van Diepen yard have also gone for scrap already (they were from the early 90s).

Plenty reefers! Is that also the Ice Fern and her sister on there? I thought these were not so old yet!

Big scrapping business !