mountain bike ... full suspension ..... electric .... below £1200.
anyone got any recommendations?
Yes. Revise your expectations
Lots around here won't like/agree what I'm going to say, but many in the mountain biking community seem to have a rough and ready rule of thumb that says to buy a 'quality' (whatever that means!) setup, you're looking around £1000 start price for a bike, then its around £1000 extra if its an e version, and its also £1000 extra if you want decent full suspension.
Ok, so there is a fair bit of leeway in that, but if you check the RRP of the mainstream bikes, its not far off.
So for £1200 all in .... well its not going to happen unless you are going to seriously compromise somewhere. Woosh's suggestion of an ok hardtail and a kit is probably very sensible. Bear in mind that cheap suspension is often a total waste of time. So either you don't really need full suspension so forget the idea, or if you genuinely do, then you are going to have to spend a whole lot more money to get something that actually does what you need it to do!