Thanks needa.
I'm not a nervous driver, but I am a nervous test taker! I drove for a couple of years and had my own car when I was 21 (a verrry long time ago) but gave up when I failed my test through nerves. Looked up some local driving instructors last night and have a couple to call, but lessons will have to wait until July as there's just no time - or money in the budget just at the moment, as we have a couple of very expensive months back to back. If we manage to sell our VW camper quickly, I will be able to book them sooner.
Caught Lurcherboy intimidating Pip out of his dinner again last night. Dh fed them then got distracted and left the room.
I was in the living room, didn't realise he'd gone and suddenly heard growling then munching. Went in and Pip was standing in the corner looking worried, while Lurcherboy scoffed his dinner. 
This makes things very difficult, as the only way to ensure Pip is quiet when I go out is to give him his green feeder and kongs. At the moment I am having to put dining chairs across the middle of the kitchen as a visual barrier and giving Lurcherboy a handful of kibble in a kong wobbler and buster cube. I can't give him any more than that, as it's hard enough apportioning out the small amount of kibble he's allowed on his diet, but he's always finished it by the time I get back off the school run, which is usually 20 minutes max. If I put him in a different room he gets really stressed, as he's always been left in the kitchen when we go out and it's all he's known for 8 1/2 years.
Gah! Dogs, who'd have 'em - we must all be bonkers! 
I am back in my own head a bit more this morning, with much more of a 'this too shall pass' attitude. Decided to go right back to basis with desensitisation and going in and out, increasing leaving times etc and just see what happens. I'm pretty sure it's not SA, but perhaps a concerted training programme, gradually extending the time I expect him to be quiet for is what's needed, so still worth a try.