Aljaz Bedene has applied to become a British citizen, the LTA has confirmed in a statement.
The 25-year-old Slovenian has been based in Britain since March 2008. If his application is successful, the world No. 108 would become the British No. 2 behind Andy Murray, and could be eligible to play for the country in Davis Cup starting next year. Bedene's Slovenian girlfriend and singer Kimalie is also based there.
Britain's Dan Evans criticized the attempted switch, writing on Twitter, "a guy is becoming British who has already played for his country... doesn't quite sound right to me."
Other players who have switched to representing Britain during their playing careers include Greg Rusedski, who until 1995 played for Canada, and Johanna Konta, who was born in Sydney, Australia to Hungarian parents and became British in 2012.