The 10yrs safe driving medal was one of several safety awards of the National Safety First Association (NSFA), some were issued to association members and other via companies to their driver employees; the recipients name should be engraved on the back.
The Association had wide ranging campaigns & even competitions and there were also certificates and badges for (x) yrs free of accidents in the workplace.
The association was formed in 1923, in response to the rapid rise in road traffic, workplace and home accidents, by a merger of the London Safety First Council and the British Industrial Safety First Association. In 1941 the NFSA became RoSPA (the Royal Society for the Prevention of Accidents), so the medal must have been awarded before that date.
The other two are WWII campaign medals, the 1939-45 Star and the France - Germany Star, the recipient would have also been awarded the War Medal (1939-45); WWII medals were issued un-named.
Jeff