UK 13 amp plugs are also commonly used in Ireland, Cyprus, Malta, Malaysia, Singapore and Hong Kong.
A fuller (but not necessarily complete!) list of countries is: Bahrain, Bangladesh, Belize, Bhutan, Burma, Botswana, Brunei, Cambodia, Dominica, ElSalvador, Falkland Islands, Gambia, Ghana, Gibralta, Grenada, Guatemala, Guyana, Hong Kong, Iraq, Jordan, Kenya, Kuwait, Lebanon, Macua, Malawi, Malaysia, Malta, Mauritius, Myanmar, Nigeria, Oman, Quatar, Saint Litts and Nevis, Saint Vincent and the Grenadines, Saudi Arabia, Seychelles, Sierra Leone, Singapore, Sri Lanka, Tanzania, United Arab Emirates, Vietnam, Yemen, Zambia, Zimbabwe.
Having typed out this list I am actually impressed at how widely UK plugs and sockets can be found around the world!
MX429824
UK mains adaptor for electric shavers
MXE261BB
Three way plug in adaptor with fuse allowing 3 devices to...
MX429817
2-way mains plug adaptor allowing 2 devices to be powered...
MX429832
Adaptor that allows equipment from countries across Europe,...
MX429829
European Schuko Socket to UK 3 Pin Plug Travel Adaptor
MXE301DB
A travel adaptor to convert from european schuko plug to standard...
MXF318EB
Converts 2 pole CEE7 euro plug to 3 pin UK mains plug. with...
MXF318EBA
This white 2 Pin European VDE Converter Plug (PC 8338) is...
MXF318EBB
This black 2 Pin European VDE Converter Plug (PC 8338) is...
MXF318EE
Converts non-earthed euro plug to 3 pin uk mains plug. with...
MXF318EXB
This black 2 Pin European VDE Converter Plug (PC 8338) is...
MXF318EF
The CP1 converter plug converts the 2 pin europlug to a uk...
MXF318EG
Converts an earthed euro schuko plug to a 3 pin UK mains ...
MXF318EH
2 pin European plug to 3 pin UK plug. 5 A.
MXF318EHA
Eagle White 5 A Fused Converter 2 Pin Euro Schuko Plug to...
MXF318EJ
3 A Fused Converter Plug 2 Pin Transformer Plug to 3 Pin UK...
MXF318EP
Black 3A Fused Euro Converter Plug 2 Pole Euro Plug to 3 Pin...
MXF318ES
Neat adaptor that turns a 2 pin USA/Chinese/Japanese plug...
MXF318ET
Neat adaptor that turns a 3 pin earthed USA/Chinese/Japanese...
MXF318EWA
This white 2 Pin European VDE Converter Plug (PC 8338) is...
MXF318EWB
This black 2 Pin European VDE Converter Plug (PC 8338) is...
MXF318EW3
3A Euro Converter Plug, which Converts 2 Pole Euro Plug To...
MX429822
Neat adaptor that turns a 2 pin 'flat' european plug into...
MX429821
Neat adaptor that turns a 2 pin 'flat' european plug into...
MX429823
This 5A fused plug converts 2 pin Euro plugs to the UK BS1363...
MX429810
This 3A fused plug adaptor allows a power supply with a 2...
MX429806
This 3A fused plug adaptor allows a power supply with a 2...
MX429814
black scp fused european converter plug
MX429941
Neat adaptor that turns a 2 pin 'round' schuko european plug...