Having claimed two trophies last week - Windsor,Slough, Eton & Hounslow AC scooped three more at the weekend.
The senior ladies retained their British Athletics League (BAL) Cup on Saturday, and although the men did not win their version, they did enough for WSEH to be crowned Combined Teams Champions too.
As if that was not enough, the following day, the juniors lifted the National Young Athletes League (NYAL) UK National Trophy.
They will sit alongside the Ladies Southern League and National Young Athletes League Southern titles won last week in a bulging WSEH trophy cabinet.
Club spokesman Dennis Daly added: "This was probably the most successful weekend in our history.
To triumph over heavily-sponsored big city clubs is a tribute to the management skills and quality coaching we have here.
"It cost more than £3,000 to take over 100 athletes to Manchester,and we really had to dig deep. Fundraising during the winter is now the prerogative to replenish the depleted coffers."
Wins for Helen Pryer,Dawn Wilson and Kerry Harty on the track helped WSEH to a seven-point winning margin over Rugby.
Alan McKie's high jump victory was the only win for the men as they came sixth, although Hounslow's Ian May came fifth in the 800m (2:00.23 mins).
Ladies coach Irene Speller said: "It's been an exceptional week by any standards.
"The BAL Cup is athletics' equivalent of the FA Cup and is keenly sought by all the top clubs in the UK.
"And our youngsters stunned the opposition in the NYAL with a victory by what could be the biggest margin in many years.
"As for the ladies, it was an amazing feat to triumph over big city and, effectively,county clubs, which receive large amounts in sponsor-ship from their councils.
"But money cannot buy team spirit, which is something we have become renowned for."