The given mapcode is using the international context, try using mapcode GBR JJ.67 instead!
🌐
AAA
VHGQZ.SJJZ
Territory:
International
🇬🇧 [GBR JJ.67]
England, United Kingdom
🇬🇧 [GBR FT.39Q]
England, United Kingdom
🇬🇧 [GBR JDT.Z6Y]
England, United Kingdom
🇬🇧 [GBR VS1Q.FCW]
England, United Kingdom
🌐 [AAA VHGQZ.SJJZ]
International