Walker (61) qualified for the Engage professional singles final when he beat Geoff Wilson (Kaikorai) 7-4, 10-7 in the final of the PBA qualifying event in Dunedin last July.
The world final will be played at Burgess Hill, West Sussex, and Walker is pitted against the experienced Jonathan Ross (Ireland).
Ross is the top-ranked Irish player and has had 15 years' experience in international bowls.
Walker has won 30 Bowls Dunedin titles but he wants to step up and crack it at the world PBA level.
He is a former New Zealand representative at World Bowls and has carved out a niche for himself in the indoor game.
He wants to get past the first round of a world final, a feat he has achieved once in his six international PBA appearances. In 2004 he beat Mark Casey (Australia) in the first round.
"I know I can do it this time," Walker said. "But I have to be realistic and don't think I can win the tournament.
"My objective is to win at least one game."
Walker will join Kevin Robinson (Waikato), who qualified when he won the event at Pukekohe by beating Ken Fitness (Auckland) 9-5, 7-7.
The four seeded players in the 32-strong field at the final are Paul Foster (Scotland), Alex Marshall (Scotland), Greg Harlow (England) and David Gourlay (Australia).
This will be the seventh time Walker has competed in a PBA final in the United Kingdom. He will have his eighth chance in January when he plays in the pairs with fellow Dunedin bowler Paul Girdler at Potters Leisure Centre.
Walker is a regular at the Westpac Indoor Bowls Stadium which opened in Dunedin in 1995.
"It's fantastic to have an international bowls stadium in our city where we can get direct entry to major overseas events," Walker said.
As part of his preparation Walker replayed the DVD he received when he was beaten by John McHutchison (Scotland) by just one shot in the two sets when he last played singles in England.
"These players don't have bad games," he said. "My key to winning is to lift my own game."
Stake money for the singles final is 50,000 ($NZ135,000). Walker has an all-expenses-paid trip and will receive $NZ2600 even if he loses his first game. If he wins his stake money will increase to $3600.
A bonus is the chance to visit relations in London and daughter Bianca in Dubai.
