Most of this ghost sign has faded but the central part was certainly hidden behind a hoarding for a while, hence its much better state.
Unfortunately I haven't found any information that could be relevant and tell us more about this ghost sign.
In the central part of the sign, the painter has represented a fairly typical horse-drawn furniture van, known as a pantechnicon, from the 19th century. Only the horses are missing. It is very similar to the one that appears on William Francis Freelove's drawing of such a van.
Location: High Street / Pictures taken in August 2012