I do love to see that paint scheme. Fantastic.
The Europa was quite a 'modest' bike offered by Raleigh, but it seemed to be offered for quite a long period of time (from memory).
Quite a few braxe-ons there - pump pegs under the top tube, rear brake guides, front lamp attachment on fork and mudguard eyes - all very practical.
The TDF winner sticker is a good starting point for establishing the earliest possible date of manufacture. (But not necessarily the adjacent year for the oower models). Given its 'modest' nature, few would have been refurb'ed by later owners (on economic grounds it made little sense, perhaps for some on sentimental grounds).
Serial number guidance - http://www.jaysmarine.com/TH_raleigh_se ... l#19731982
The serial number suggests made in Nottingham (N) in August (L) 1981 (first number - '1').
Thanks for the photos. Enjoy,