Nope, those are figures for all of Europe, not the UK alone. Oh, and it's classified in the "Large Premium SUV" segment because they retailed well above £ 40,000. There were a few "commercial" versions but those largely were dumped in favor of the Disco Commercial. Military and police variants don't count because they weren't selling those on the open market.
A farm implement it is not, nor has it been since the 1970s, as others have posted many times who actually live in the UK. Once the Japanese started selling the Hilux and Nissan D21 / Navarra as stripper work trucks well under the price of the Defender and with way better reliability than British Leyland the Defender was relegated to a few thousand buyers annually across all of Europe, US, and Australia.