[Galaxy S II General] rizdroid:
After recent updates, 72.5% of 171 known SGS2 standard (GT-I9100) versions are on ICS:

Argentina ......... Claro ............. CTI ... UHLPK
Argentina ......... Unbranded ......... ARO ... UHLPI
Australia ......... Optus ............. OPS ... XWLP8
Australia ......... Unbranded ......... XSA ... XWLP8
Austria ........... A1 ................ MOB ... BULPC
Austria ........... Orange ............ ONE ... BVLPB
Austria ........... Three ............. DRE ... XWLPD
Austria ........... T-Mobile .......... MAX ... BOLPE
Austria ........... Unbranded ......... ATO ... XWLP7
Baltics ........... Unbranded ......... SEB ... XWLP7
Bangladesh ........ Unbranded ......... TML ... XWLP7
Brazil ............ Claro ............. ZTA ... VJLP8
Brazil ............ Tim ............... ZTM ... VJLP7
Brazil ............ Unbranded ......... ZTO ... VJLP7
Brazil ............ Vivo .............. ZVV ... VJLP7
Bulgaria .......... BG Global ......... GBL ... XWLP7
Bulgaria .......... M-Tel ............. MTL ... XWLP7
Bulgaria .......... Vivacom ........... VVT ... XWLP7
Chile ............. Claro ............. CHL ... UHLPK
Chile ............. Entel ............. CHE ... UHLPK
Chile ............. Telefonica ........ CHT ... UHLPJ
Croatia ........... TELE2 ............. TWO ... XWLPD
Croatia ........... T-Mobile .......... CRO ... BOLPD
Croatia ........... Unbranded ......... TRA ... XWLP7
Croatia ........... Vipnet ............ VIP ... BULPC
Cyprus ............ Unbranded ......... CYO ... XXLPQ
Czech Republic .... O2 ................ O2C ... XWLP7
Czech Republic .... T-Mobile .......... TMZ ... BOLPD
Czech Republic .... Unbranded ......... XEZ ... XWLP7
Czech Republic .... Vodafone .......... VDC ... BULPC
Denmark ........... Three ............. HTD ... XWLP7
France ............ Orange ............ FTM ... BVLPB
France ............ SFR Mobile ........ SFR ... BULPC
France ............ Unbranded ......... XEF ... XWLPD
Germany ........... Debitel/Unbr ...... DBT ... XWLP7
Germany ........... E-Plus ............ EPL ... XWLP7
Germany ........... O2 ................ VIA ... XWLP7
Germany ........... T-Mobile .......... DTM ... BOLPD
Germany ........... Vodafone .......... VD2 ... BULPC
Greece ............ Cosmote ........... COS ... BOLPD
Greece ............ Unbranded ......... EUR ... XWLP7
Greece ............ Vodafone .......... VGR ... BULPC
Hong Kong ......... Unbranded ......... TGY ... ZSLPG
Hungary ........... Telenor ........... PAN ... XWLP7
Hungary ........... T-Mobile .......... TMH ... XWLP7
Hungary ........... Unbranded ......... XEH ... XWLP7
Indonesia ......... Unbranded ......... XSE ... DXLP7
Ireland ........... eMobile ........... EIR ... XWLP7
Ireland ........... Meteor ............ MET ... XWLP7
Ireland ........... O2 ................ O2I ... XWLP7
Ireland ........... Three ............. 3IE ... XXLPQ
Ireland ........... Vodafone .......... VDI ... BULPC
Italy ............. TIM ............... TIM ... XWLPD
Italy ............. Tre ............... HUI ... XWLP7
Italy ............. Unbranded ......... ITV ... XWLPF
Italy ............. Vodafone .......... OMN ... XWLP7
Italy ............. Wind .............. WIN ... XWLP7
Kazakhstan ........ Unbranded ......... SKZ ... XWLP7
Luxembourg ........ Unbranded ......... LUX ... XWLP4
Macedonia ......... T-Mobile .......... MBM ... BOLPD
Nepal ............. Unbranded ......... NPL ... XWLP7
Netherlands ....... KPN ............... KPN ... XWLPD
Netherlands ....... T-Mobile .......... TNL ... BOLPD
Netherlands ....... Unbranded ......... XEN ... XWLPD
Netherlands ....... Vodafone .......... VDF ... BULPC
New Zealand ....... Vodafone .......... VNX ... XWLP7
New Zealand ....... Vodafone .......... VNZ ... XWLP7
Nordic Countries .. Unbranded ......... NEE ... XWLPD
Norway ............ Telenor ........... TEN ... XWLPD
Philippines ....... Globe ............. GLB ... DXLP7
Philippines ....... Smart ............. SMA ... DXLP7
Philippines ....... Unbranded ......... XTC ... DXLP7
Poland ............ Orange ............ IDE ... BVLPB
Poland ............ Plus .............. PLS ... XWLP7
Poland ............ T-Mobile .......... ERA ... XWLPD
Poland ............ Unbranded ......... XEO ... XXLPW
Portugal .......... Optimus ........... OPT ... XWLPD
Portugal .......... TMN ............... TMN ... XWLPD
Portugal .......... Unbranded ......... TPH ... XWLPD
Portugal .......... Vodafone .......... TCL ... BULPC
Romania ........... Orange ............ ORO ... BVLPB
Romania ........... Unbranded ......... COA ... XWLP7
Romania ........... Vodafone .......... CNX ... BULPC
Russia ............ Unbranded ......... SER ... XWLPD
Serbia ............ MT S .............. TSR ... XWLP7
Serbia ............ Telenor ........... MSR ... XWLP7
Serbia ............ Unbranded ......... SMO ... XWLP7
Serbia ............ Vip SRB ........... TOP ... XWLP7
Singapore ......... SGP-M1 ............ MM1 ... DXLP9
Singapore ......... Sing Tel .......... SIN ... DXLP9
Singapore ......... StarHub ........... STH ... DXLP9
Singapore ......... Unbranded ......... XSP ... DXLP9
Slovakia .......... Unbranded ......... ORS ... XWLPE
Slovenia .......... Mobitel ........... MOT ... XWLPD
Slovenia .......... Si.mobil .......... SIM ... BULPC
South Africa ...... Unknown ........... XFA ... XWLP7
South Africa ...... Unknown ........... XFC ... XWLP7
South Africa ...... Unknown ........... XFM ... XWLP7
South Africa ...... Vodacom ........... XFV ... XWLP7
Spain ............. Movistar .......... XEC ... BGLP8
Spain ............. Orange ............ AMN ... BVLPB
Spain ............. Unbranded ......... FOP ... XWLP7
Spain ............. Vodafone .......... ATL ... BULPC
Spain ............. Yoigo ............. YOG ... XWLP7
Sri Lanka ......... Unbranded ......... SLK ... XWLP7
Sweden ............ Tre ............... HTS ... XXLPQ
Switzerland ....... Swisscom .......... SWC ... BULPC
Switzerland ....... Unbranded ......... AUT ... XWLP7
Taiwan ............ Chunghwa .......... CWT ... ZSLPG
Taiwan ............ TWM Mobile ........ TWM ... ZSLPG
Taiwan ............ Unbranded ......... BRI ... ZSLPG
Thailand .......... Unbranded ......... THL ... DXLP9
Trinidad/Tobago ... Unbranded ......... TTT ... UHLPE
Turkey ............ Unbranded ......... TUR ... XWLP7
U. Arab Emirates .. Etisalat .......... ARB ... XWLP7
UK ................ H3G ............... H3G ... XWLP7
UK ................ O2 ................ O2U ... XWLP3
UK ................ Orange ............ ORA ... BVLPB
UK ................ T-Mobile .......... TMU ... BVLPB
UK ................ Vodafone .......... VOD ... BULPC
UK/Ireland ........ Carphone .......... CPW ... XWLP7
UK/Ireland ........ Unbranded ......... XEU ... XWLP7
Ukraine ........... Kyivstar .......... SEK ... XWLP7
Ukraine ........... Unbranded ......... VHC ... XWLP7

These 47 versions are on GB:

Afghanistan ....... Unbranded ......... AFG ... JPKJ2
Argentina ......... Movistar .......... UFN ... UHKG7
Argentina ......... Personal .......... PSN ... UHKG7
Belgium ........... Unbranded ......... PRO ... XWKI9
Bosnia ............ BH Mobile ......... BHT ... XWKI4
Bosnia ............ HT Eronet ......... ERO ... XWKI4
Caribbean ......... Digicel-Profile ... JDI ... WBKK1
Chile ............. Unbranded ......... CHO ... UHKI4
China ............. China Mobile ...... CHZ ... ZCKJ1
China ............. China Unicom ...... CHN ... ZCKJ1
Colombia .......... Comcel ............ COM ... UHKH3
Colombia .......... Movistar .......... COB ... UHKH1
Dominican Republic Claro ............. CDR ... UHKG7
Egypt ............. Unbranded ......... EGY ... JPKJ2
France ............ Bouygues Tel ...... BOG ... XWKI4
France ............ Free .............. FRE ... XWLA3
India ............. Unbranded ......... INU ... XWKL1
Iran .............. Unbranded ......... THR ... JPKJ2
Iraq .............. Unbranded ......... MID ... JPKJ2
Israel ............ Orange ............ PTR ... JHKJ1
Kazakhstan ........ Kcell ............. KCL ... XWKI4
Kenya ............. Safaricom ......... AFR ... XWKF3
Macedonia ......... Unbranded ......... MKO ... XWKI4
Macedonia ......... Vip MK ............ VIM ... XWKI4
Malaysia .......... Unbranded ......... XME ... DXKL3
Mexico ............ Telcel ............ TCE ... UMKK1
Pakistan .......... Unbranded ......... PAK ... JPKJ2
Panama ............ Cable Wireless .... PCW ... UHKG7
Panama ............ Unbranded ......... TPA ... UHKI2
Paraguay .......... Claro ............. CTP ... UHKG7
Paraguay .......... Unbranded ......... UPO ... UHKJ1
Peru .............. Claro ............. PET ... UHKJ1
Peru .............. Movistar .......... SAM ... UHKG7
Philippines ....... Sun ............... XTE ... DXKL3
Puerto Rico ....... Claro ............. PCT ... UHKG7
Saudi Arabia ...... Unbranded ......... JED ... JPKJ2
Saudi Arabia ...... Unbranded ......... HAJ ... XWKE2
Saudi Arabia ...... Unbranded ......... KSA ... JPKJ2
South Africa ...... Unknown ........... XFE ... XWKI4
U. Arab Emirates .. Unbranded ......... XSG ... JPKJ2
Ukraine ........... ALLO .............. ALO ... XWKI4
Ukraine ........... DJuice ............ FTD ... XWKI4
Ukraine ........... MTS UKR ........... MSG ... XWKI4
Uruguay ........... Antel ............. ANC ... UHKH1
Uruguay ........... Claro ............. CTU ... UHKG7
Venezuela ......... Unbranded ......... VNO ... UHKI2
Vietnam ........... Unbranded ......... XXV ... DXKL3