By Henry Saker-Clark, PA Deputy Business Editor & Lawrence Matheson Ikea’s much-anticipated Oxford Street store opening has been delayed once again, this time due to a leaky basement that needs fixing. The iconic location, which was previously the flagship store for Topshop before the Arcadia Group’s collapse, has had its grand unveiling pushed back for the second time. Owned by Ingka Investments, Ikea’s investment division, the Grade II listed building at 214 Oxford Street was acquired after the fall of Arcadia into administration. Renovation work commenced in 2022, with the initial goal to w…