I would recommend sourcing an 096 AGM battery from Tayna batteries and then find a local garage to fit and code it for you (assuming you have not got access to VCDS, obd11 or carista type devices). Last time I looked Varta and Bosch batteries were about £125 and maybe another £25 to fit and code. The coding takes 2 mins and only involves updating the battery type and altering the serial number.