By Amber Murray It’s somewhat surprisingly that luxury retail in London is doing so well, particularly given eye-catching figures about a wider downturn in the luxury market, the effect of the tourist tax, and the potential exodus of high-net-worth non doms from the capital. But while these “handicaps” – particularly the tourist tax – have hampered demand somewhat, luxury industry lobby Walpole said they haven’t made a significant difference on the demand for luxury goods in the capital, particularly not if you’re set up in the right place. “The strength and growing wealth of the UK’s affluent…