OK…I will say that this, for me, is one of the most fantastic small pieces, not only at Upfest but anywhere, that I have seen. The portrait of Einstein by Yassen Nenov (Yasko) is kind of crazy, but beautifully sprayed. There is something about it that just ticks all my boxes.

I’m not sure if it is the use of the space, the colours, the subject or the execution, but it just works for me.

Yassen Nenov, originally from Bulgaria (I think), is now based in Portsmouth. He specialises in bespoke pieces for cars and bonnets, helmets and walls and murals, and is making a name for himself for his custom work.

I am less interested in his commissions (these things are always so ridiculously outside my price bracket) than I am in his public art, such as this piece. Great, great, great.