Ad numbers are their respective file names, not me being unable to count.
Ad 01: Microsoft Office 365
Ad 02: NOWTV
Ad 03: BT Sport
Ad 05: Butlins
Ad 06: Holiday Inn
Ad 07: EDF Energy
Ad 08: Nandos
Ad 09: Children with Cancer Charity
Ad 10: Digital Radio
Ad 11: DVLA 
Ad 12: AutoTrader
Ad 14: Go Compare
Ad 16: Tesco Price Drop
Ad 18/19: National Lottery 
Ad 20: o2 Pay as You Go
Ad 21: Nesquik
Ad 22: Direct Line
Ad 24: Met Police Counter Terrorism
Ad 25: ADT Security
Ad 28: Robinsons
Ad 30: British Gas
Ad 32: MG Motors
Ad 37: More Than
Ad 38: Volkswagen
Ad 39: Royal Mail
Ad 40: Direct Line
Ad 41: Churchill 
Ad 42: Wonga 
Ad 43: Subway
Ad 45: BT 
Ad 50: ASDA Mobile
Ad 52: Blinkbox
Ad 53: Halifax
Ad 54: Lloyds TSB
Ad 56: National Blood Service
Ad 58: McCains' 
Ad 65: Virgin Media
Ad 67: Coca-Cola
Ad 68: Walkers
Ad 70: Strongbow
Ad 72: Tesco Clubcard
Ad 73: Ribena
Ad 82: Yell!
Ad 80: Clinque 
Ad 83: Twix
Ad 86: BMW
Ad 87: Autoglass
Ad 90: Vauxhall
Ad 91: Time to Change
Ad 92: Barclays
Ad 93: SuperSavvyMe
Ad 94: DFS 
Ad 95: Think Bike, Think Biker
Ad 96: Fire Kills
Ad 97: HM Revenue and Customs 