UK proptech startup Hubble just raised £4 million (€4.6 million) from JLL Spark and others.
This actually means that, based on comparable deals, Hubble sold an estimated 20% equity stake in their company to JLL Spark for £4 million.
This in turn means that Hubble is valued priced at £4 million / 20% = £20 million (€23 million) post-money.
Price startup = price deal / equity stake sold