DIBA15 Grid - EPSG:10207

WKT

PROJCS["DIBA15_Grid", 
	GEOGCS["DIBA15-IRF", 
		DATUM["DIBA15_Intermediate_Reference_Frame", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 511622.854], 
	PARAMETER["False_Northing", 324737.4633], 
	PARAMETER["Central_Meridian", -1.3], 
	PARAMETER["Scale_Factor", 1.0], 
	PARAMETER["Latitude_Of_Origin", 51.85], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["DIBA15_Grid", 
	BASEGEOGCRS["DIBA15-IRF", 
		DATUM["DIBA15_Intermediate_Reference_Frame", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 511622.854], 
		PARAMETER["False_Northing", 324737.4633], 
		PARAMETER["Central_Meridian", -1.3], 
		PARAMETER["Scale_Factor", 1.0], 
		PARAMETER["Latitude_Of_Origin", 51.85]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "10207"]]

Data from @esri/proj-codes

{
  "wkid": 10207,
  "latestWkid": 10207,
  "gcsWkid": 10204,
  "macro": "PE_PCS_DIBA15_GRID",
  "name": "DIBA15_Grid",
  "wkt": "PROJCS[\"DIBA15_Grid\",GEOGCS[\"DIBA15-IRF\",DATUM[\"DIBA15_Intermediate_Reference_Frame\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",511622.854],PARAMETER[\"False_Northing\",324737.4633],PARAMETER[\"Central_Meridian\",-1.3],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",51.85],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"DIBA15_Grid\",BASEGEOGCRS[\"DIBA15-IRF\",DATUM[\"DIBA15_Intermediate_Reference_Frame\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",511622.854],PARAMETER[\"False_Northing\",324737.4633],PARAMETER[\"Central_Meridian\",-1.3],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",51.85]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"10207\"]]",
  "description": "DIBA15 Grid",
  "authority": "EPSG",
  "version": "10.079(13.2.0)",
  "deprecated": "no",
  "areaname": "UK - Didcot to Banbury",
  "extent": {
    "slat": 51.57,
    "nlat": 52.11,
    "llon": -1.46,
    "rlon": -1.15
  }
}