GCA chief executive Iain Wylie said: "We're mid-way through our week of regional awards meetings and things are going swimmingly. Everyone has had a fantastic time and it's great to see all the garden centres' hard work being rewarded.
"I'd like to congratulate Squires and Haskins for scooping the top awards. They will now battle it out against top scoring centres around the country for the titles of Garden Centre of the Year and Destination Garden Centre of the Year, which will be announced during our annual conference in January 2016.
"Other awards on the night included Best Customer Services, which went to Squires Garden Centre – Badshot Lea and Best Environment and Community, which was awarded to Squires Garden Centre – Cobham."
The award for Best Creativity and Innovation was presented to Haskins Garden Centre – Ferndown and Forest Lodge Garden Centre received the award for Most Improved centre.
Wylie added: "A big 'thank you' goes to Haskins Garden Centre in West End, Southampton, for hosting the evening and to inspector Andy Campbell, who presented his findings on the night."
The next regional awards meeting will take place tonight at Monkton Elm Garden & Pet Centre in Somerset for the Wales and West followed by the North West/North East meeting on Friday, July 24 at Bents Garden & Home in Glazebury, Warrington.
The full results for the South Thames region GCA area awards are as follows for the GC and DGC categories:
Best Garden Centre: Squires Garden Centre – Hersham (GC) and Haskins Roundstone Garden Centre (DGC)
Best Customer Service: Squires Garden Centre – Badshot Lea
Best Environment and Community: Squires Garden Centre – Cobham
Best Creativity and Innovation: Haskins Garden Centre – Ferndown
Most Improved: Forest Lodge Garden Centre
Best Restaurant: Millbrook Garden Centre - Staplehurst (GC) and Chessington Garden Centre (DGC)
Garden Products Retailer: Thompsons Garden Centre – Chislehurst (GC) and Haskins Garden Centre – Ferndown (DGC)
Best Indoor Lifestyle: Blackbrooks Garden Centre (GC) and Garsons Garden Centre – Esher (DGC)
Best Outdoor Living: Joint winners Squires Garden Centre – Hersham and Squires Garden Centre – West Horsley (GC) and Polhill Garden Centre – Sevenoaks (DGC).