This list is a couple of years old and might need updating but this is the work of Frankie P , who puts a lot of tennis work in at oddsnet.com and for that he has kudos..
Bookie Tennis Rules
RESULT STANDS AFTER ONE BALL:
Betandwin,
Betdaq,
Betdirect,
Betoddoreven, Betonbet,
BlueSquare,
Eurobet, Expect, GGbet, Globet,
Interwetten,
Ladbrokes, Parbet, Playit, Sportingoptions, Totebetexpress.
RESULTS STANDS AFTER ONE SET:
Betfair,
Skybet,
Sportingbet, Sportingodds,
Stan James,
Unibet.
MATCH MUST BE COMPLETED:
Admiralbet,
Bet365,
Betinternet,
Canbet, Capitalsports, Cashpoint,
Centrebet,
Gamebookers, Nordicbet, Olympic,
Paddy Power,
Pinnacle, Stanleybet, Totalbet, Ukbetting,
Victor Chandler, Vikingbet, Wetten-Schwchat,
William Hill.