Alfie is such a sweetheart! If you trim around his paws & tip his ears, he'll look tidy & spiffy. Just doing that will make a big difference. IDK how the weather is over there, but I reckon it gets very cold? He'll probably wear clothing, but I'd leave his body hair alone. You can just have them scissor it along w/his legs to even it out. Putting a clipper over his very thin hair might make him look shaved. So you'll want to ask for a #4 blade cut or even longer. Also bc his leg hairs are so sparse right now, it won't look like the Joey cut. I'm just being honest & want you to 'see' the outcome of the cut you are envisioning for him. I'm sure he will grow a fuller coat since you've got his allergies in check
& he will have lovely full hair on him soon.