bulkhead to outrigger bolts?

Hi, went to my dealer next to portobello in edinburgh to look at the new Defender back seats.

Whilst there I thought I'd get two nuts and bolts for Ediths bulkhead to chassis connection. Waited a while, bit longer then a chap came shuffled through the microcat before announcing i needed a pair of M10x100.

Surely not? Anyone got any proper answer to the size I need? I'm not inclined to beleive him as he also told me that there are no, nor have ever been two part doors for a 110.

That dealer has gone down hill each time it's changed names. And it's changed names about 5 times in as many years.

i thought all 110's had 1 piece doors from new, the only thing other than a series with 2 piece doors was the stage 1, except fer ex mod's of course , i wouldnt swear by it tho