Got it running (of sorts) today.
Swapped the fuel pump shaft for the one of my old engine. That inside bolt is a bugger eh! Chucked a bit of fuel down the carb, capped off one of the vacuums and voila!

Didn't tick over though, which is unsurprising as non of the carb eletrics and vacuums are on. However, when i went to start it again it was backfiring up the carb and out the exhaust. I checked the timing by getting it to TDC and looking at where rotary arm was pointing. it was just off Cylinder#1. @Itchyfeet I slackened off the 10mm bolt at the base of the distributor but, that only allowed the dizzy to spin not the rotar?
Any how, I threw it back together and tried again and still only backfiring. When i was turning the engine over by hand, I could swear that the rotar wasnt spinning. I possibly did about a full turn of the engine looking at this hoping to see it move but it didnt. So I flicked the starter switch (the remote one!

) and it spun around and happily moved when I tried by hand again?
I have a video of me trying to start it. Just not sure how to get it from my phone to here...
Any suggestions on what would cause the backfiring?