Use the pictures as a guide and then look at the details - if you notice it could quite easily have been
T.robusta (especially before you gave me sizes) - you can't just go by pictures, or at least not just by
one picture.
You need to cross reference them - with other guides/keys or with correctly ID'd photos.
Either way it's never going to be 100% accurate till you can view the palps or epigyne under a field lens or microscope.
Helpful sites which should give you a good cross reference:
Photo Gallery Arachnida Spiders of Europe and Greenland Spider Relatives, Arachnids, at Eurospiders.com Salticidae :: Araneae :: Arachnida :: worldwide database of jumping spiders by Dr. Heiko Metzner
Good key (make sure you translate it, its in German)
Bestimmung_Ganz
Depending on which edition of Collins you have you'll need to update some of the listings - (name changes mainly) and one wrongly (so I've been told) Pardosa sp (should be
saltans rather than
lugubris)
The Checklist of British Spiders - British Arachnological Society