A world ranking inside the top 250 will no longer be enough to earn British players a wildcard at Wimbledon.
The Lawn Tennis Association (LTA) previously advised the All England Club of the wildcard entries, with a policy to select top-250 players.
But an LTA spokesperson says it now plans to nominate those who "have the best chance of performing well".
Of the eight players given wildcards in the 2014 singles main draw, only Naomi Broady won her first-round match.
"This revised approach will enable the LTA to give consideration to attributes in addition to rankings," an LTA spokesperson added.
"These additional attributes will include attitude, professionalism, game development and recent form."
Improved prize money at the Grand Slams has made wildcards increasingly valuable, with last year's first-round losers taking home £27,000.
The new policy is likely to favour younger players, while those who have received a number of wildcards in the past will have to do a lot to prove they deserve one.
|British singles wildcard entries at Wimbledon 2014 and current world rankings|
|James Ward - 106||Naomi Broady - 177|
|Kyle Edmund - 144||Tara Moore - 358|
|Daniel Cox - 245||Samantha Murray - 446|
|Daniel Smethurst - 296|
|Daniel Evans - 617|