I made a last minute booking at Alternatives through Wahanda because it was advertised as Highbury and they could fit me in for a late notice Shellac mani at a convenient time. I would say that the salon is closer to Holloway than Highbury but it is easy to find. It's a small space with some nice skincare and haircare brand products for sale but it is a pretty basic space, by no means luxury.
My therapist was very friendly and they had a good range of CND Shellac colours to choose from. The manicure itself was nicely done, she was a little tough on my cuticles but the shaping and application was quite good. The polish was a little thin and could have done with one more coat. Overall I left the salon feeling pleased with the mani, it wasn't the best I'd ever had but for the price I thought it was pretty decent. However, 3-4 days later it was peeling off. I usually get a full 2 weeks with Shellac, sometimes almost 3 weeks! I suspect the peeling was due to the lamp used to cure the polish not being a CND one as it took much longer than normal to cure each layer. For this reason I wouldn't recommend this treatment unless they invest in a new lamp. I would pay more to get a full 2 weeks from the manicure.
The staff here are very friendly and polite however the cubicle I was in was very cramped and also right next to the reception desk so everything could easily be heard by anyone who walked in. It was quick and relatively cheap though so a good bet if you're on a low budget!
I went on a Sunday, when this venue works only by appointment. Even though the place is quite small I had it all for myself. The Lady was really nice and I was happy with the pedicure.