It's the late great Alan Murphy. One of my all time favourite guitarists
He was one of the top session guys in the UK during the mid-80's, played for Kate Bush, Go West, Nick Heyward and was in Level 42 when he died.
He played some fantastic solos on the first two Mechanics albums.
Normally he used a JV Squire Strat with a Kahler into a Fender Super Champ, then sometimes into his effects rack. Clean sounds were generally an Aria Esprit DI'd
This vid shows him playing with Go West and that rig. Solo at 305
I've just listened to the solo again. I cant hear any harmoniser, when he did use one he made it quite pronounced, He used a slap back delay and the bridge and middle pickups of his strat and I find winding the middle tone back helps.
I've just looked through my old AX8 presets as I had one that replicated Al's tone, but I've realised I didn't save it when I got rid of my AX8 and I have a III now
I think I used the 59 bassman with the bass off and the mids and treble up high, with an IR with plenty of low cut