Here's another list from BrandSynario. I have excluded the Agencies without working websites:


Contact Plus

Contact Plus belongs to "The Interflow Group" and is headed by the man behind NTM, TV1, Radio1, Tahir A Khan. Their clientele includes Shell Pakistan, Tapal, Caltex, All cellular companies except Mobilink and Engro Foods.

Contact

D-91 Tipu Sultan Road, KDA Scheme 1, Karachi
Tel: 0213-4314286-89
Email: info[at]contactplus.com.pk

Direct Consumer Contact

a rapidly growing company known for innovation and excellence in the development of BTL & Out-Of-Home media, established in 2003 by Mr. Asif Awan, one of the pioneers of BTL & Outdoor Advertising in Pakistan.

Contact

103-G, 2nd Floor, Commercial Area, DHA Lahore.
Tel: 0423-5747448-9

Hyeworth Pakistan

The largest, most widely spread brand activation agency with 8 permanent and 7 field offices spread around the country. Their clientele includes GlaxoSmithKline, LG, Habib Oil, LU biscuits, National Foods, Reckit Benckizer, Nestle, Mortein, 3M Pakistan and Mobilink.

Contact

Hyeworth House, 40 G-1, Block 6, PECHS, Karachi.
Tel: 111-312-312

iris communications

Iris focuses on result orientated activations and has more than Ten years of Creative market research, Brand activation, Merchandising & Event management services

Contact

Lahore: 1st Floor, 176-Y, Commercial Area, DHA
Tel: 0423-5727346/5726859
Karachi: C-78, Block-2, Clifton
Tel: 0213-5291626-27
E-mail: contact[at]iriscommunications.com.pk

If you belong to a Brand Activation Agency and don't find it here. Please write the details of your company in the comments section of this post.

Also check http://talhaa.blogspot.com/2009/06/creative-agencies-hotshops-pakistan.html for a list of Creative Agencies in Pakistan