After 4 years with HIFK, Karhu-Kissat and a short stint with Czech Extraliga side HC Stadion Hradec Kralove, Ahlroos moved to another SM-liiga outfit, the Turku-based TuTo Hockey for the 1995-6 season.
For the 1999-2000 season Ahlroos, alongside Podhale team mate Mikko Koivunoro, would move to the United Kingdom in order to play for BISL outfit Newcastle Riverkings.
Ahlroos would then return to the UK for the rest of the season, this time playing for the Cardiff Devils, also of the BISL, where he made an instant impact, scoring on his debut against the London Knights.
For the following season, Ahlroos stayed in the BISL joining the reigning league champions, the London Knights, along with fellow Devils teammates Ian MacIntyre, Steve Thornton and Vezio Sacratini.
Following the culmination of the 2002-03 season, in which the Knights lost the playoff final to the Belfast Giants, the team would fold as a result of their rink, the London Arena, being sold to developers.