The R4 3DS card is the best choice to play free DS games on all Nintendo 3DS firmwares, just like 3DS 11.6.0-39, 11.5.0-38, 11.4.0-37 and all the lower systems. The R4i Gold Pro, R4i SDHC 3DS RTS, R4i B9S, R4i Gold 3DS Plus are all your choice in UK.