Here are some educational centers that offer preparation for London O Level IGCSE exams, listed from most affordable to potentially more expensive options. Please note that specific pricing details are often unavailable, so you may need to contact them directly for precise information. 

1. Institute for London AL Studies

•  Address: 108A H. Sri Nisshanka Mawatha, Colombo 00600, Sri Lanka
•  Phone: +94 77 731 1268
•  Website: Institute for London AL Studies
• Rating:  5 (3 reviews)
• Hours:  Closed Now
• Google Directions: Get Directions

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2. London Exam in Colombo

•  Address: 7.881849, 80.700343, Kandalama, Sri Lanka
•  Phone: +94 77 898 2620
•  Website: London Exam in Colombo
• Rating: None available
• Hours:  Open Now
• Google Directions: Get Directions

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3. Accolade by Gateway

•  Address: 4, Liberty Plaza, Colombo 03, Sri Lanka
•  Phone: +94 77 788 7193
•  Website: Accolade by Gateway
• Overview: Premier center offering IGCSE, O-Level, and A-Level courses.
• Google Directions: Get Directions

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4. Focus College

•  Address: 213B, D. S. Senanayake Mw, Colombo 08, Sri Lanka
•  Phone: +94 11 2 505 250
•  Website: Focus College
• Overview: Provides a 2-Year Programme for London IGCSE/O-Level.
• Google Directions: Get Directions

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5. British Council Sri Lanka

•  Address: 49, Alfred House Gardens, Colombo 03, Sri Lanka
•  Phone: +94 11 752 1000
•  Website: British Council Sri Lanka
• Overview: An established institution offering numerous examinations including O-Level and IGCSE.
• Google Directions: Get Directions

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 Promotions

Currently, there are no confirmed promotions, but it’s always worth asking when you contact these institutions!

Feel free to reach out directly to inquire about pricing and availability of courses!