Jeremy Bates has resigned as Great Britain's Davis Cup captain following the weekend's defeat by Israel.
Bates has held the role since January 2004
Bates took over the captaincy in January 2004 but has overseen just two wins from six matches in charge.
However, he will stay on in his current role as the governing body's interim head of performance.
"I have enjoyed my time as Davis Cup captain and it has been a privilege both to do the job and to work with the players," said Bates.
"I would like to thank all the players who have been in the team for the tremendous work that they put in.
Although we hope to make a permanent appointment shortly I would consider appointing an interim captain
LTA chief executive Roger Draper
"Nobody can doubt the effort and commitment that they showed, particularly in Eastbourne over the weekend.
"The highlight of my time as captain was undoubtedly the victory against Israel away last year.
"I intend to work with those who have a passion for British tennis in creating a production line of future world-class players, as I believe that we can be a force in world tennis."
Bates's captaincy coincided with the retirement from the competition of Tim Henman, while Greg Rusedski has suffered a catalogue of injuries and a slump in form over the past two years.
Britain's hopes for the future now rest with 19-year-old Andy Murray, but the Scot was forced to withdraw from Sunday's crucial return singles through injury after playing five-set matches on Friday and Saturday.
Britain's 3-2 defeat to Israel means they now face a Euro-Africa Zone I relegation tie against Ukraine in September.
LTA chief executive Roger Draper said: "I would like to thank Jeremy for his dedication over the last three years as captain.
"I look forward to continuing to work closely with him in his broader coaching role at the LTA. As we redesign the LTA, Jeremy will be an important part of our team going forward.
"The tie against the Ukraine will come around very quickly and although we hope to make a permanent appointment shortly I would consider appointing an interim captain should that be necessary."
Former British number one John Lloyd told the BBC on Monday that he would be interested in the position if it became available.