EU to UK, type 4 is British Standard approved adapter. It is useful for importers who are importing  electronic products with European (Round with earthing) Power Plug. It is also useful if a person wants to use an European electronic product in United Kingdom Permanently. Its 100% safe to use.
British standards approved.

Specifications :

Model number : OMTA-EU13-UK3KW-BSA
Power: 220~240VAC, 50Hz
Maximum Current : 13 Amp
Maximum  Load    : 3000 Watt
Input Plug type : European standard Round Plug with earthing
Output Plug type : UK Standard Type G 3 pin plug
Safety : Inbuilt Fuse 13 Amp
Certification : British standards approved, CE, RohS
EAN Code : 8944721008339

Note: Product pictures are as reference, color can be change but specification will remain same.This adapter doesn’t convert voltage.