The Prime-minister has resurrected plans for a Garden Bridge.
Mr Johnson explained the plan; "Not building the bridge in London has cost the tax payer £43M, I think we can do better than that. Did you know you could walk from the UK to the EU in Ireland? I didn't. But we can take advantage of that by moving the bridge to connect to the EU because there's simply a line in the road in Northern Ireland that the bridge has to cross."