Yup Andy,
Bit of dart board pattern with pins in the map.
The original poster quoted R5601 which decodes to 50.60647603 N 1.00526708 E (in the Channel)
(g) report gives R5061 decodes to 51.14700761 N 0.94515466 E (Quarrington Wood – East of Ashford)
(k) report gives R5871 decodes to 51.23467494N 1.06381538 E (Fausett Hill/Red House Lane)
The (k) report is closest to Street End/Lower Hardres.
Attached is the (k) report from AIR 40/2401
[ATTACH=CONFIG]226015[/ATTACH]
Regards
Ross