Three through to Rose Bowl
Wimbledon, Swardeston and Bootle booked their places at the Cockspur Club Twenty20 Finals Day at the Rose Bowl leaving just one berth left to fill for the showpiece event.
South Northumberland and Bracebridge Heath will contest the North Regional Final with a trip to Southampton their prize.
For South Northumberland there is the prospect of making history. Already in the final of the National Club Championship where they will meet Ealing, they will become the first side to reach both ECB club cup finals if they overcome Bracebridge Heath.
On a weekend blessed by dry weather, the West Regional Final was played in blustery conditions and in front of a sizeable crowd the home side Chester Boughton Hall were blown away by Bootle.
The hosts scored an under par total of 124 for nine in their 20 overs which Bootle cruised past with nine wickets and two overs to spare. Neil Williams top scored with 57 not out but the man of the match award - a bottle of the Cockspur rum presented by former England fast bowler Gladstone Small - went to Jack Boardman for his well made unbeaten half-century.
Before the South Regional Final could take place, with Wimbledon waiting patiently in the wings, hosts Frocester had to settle the South West Area Final against Cornish giants St Just.
Batting first St Just never made it out of the blocks, bowled out for just 86 in the 15th over with James Shackleton the pick of the bowlers with 3-22. The home side were never in trouble in reply and knocked off the total in the 11th over with the loss of only two wickets, Adam Robson holding the innings together with 35 not out.
As St Just made their way home down the M5 a steady drizzle set in for the afternoon for their South Regional Final with Wimbledon.
Frocester won the toss and inserted Wimbledon on a wet wicket - decision that looked fair until Steve Trenchard smashed 34 off the final over, the only four coming off the fourth ball.
Wimbledon's imposing total of 185 was too much for the Frocester batsmen who threw the bat valiantly but were bowled out for 120 in the 19th over with all bowlers sharing the honours.
Elsewhere at Swardeston in the East Regional Final, the home side ended the dream for surprise package Oundle Town from the Northamptonshire Premier League Division 2.
Batting first Oundle Town scored steadily all through the team to post a competitive 142 for five with up and coming star Andy Reynoldson top scoring with 61 not out.
In reply the home side lost early wickets but Mark Thomas scored 36 from 22 balls to give the middle order the required momentum leaving Sims (30), Lambert (19) and Walker (17) to win the game with five balls to spare.