Open Question: Should my solicitor have disclosed the HIP?

We recently purchase a house. After completion we found that mains gas was not connected to the house. We checked all the advise and documents that we had been provided with by our solicitor and this was not included. We were not provided with a copy of the HIP although this was provided to our solicitor. When we spoke to the conveyancer to acted for us she read to me a section of the HIP which disclosed that mains gas was not connected. I have asked them to compensate for the ten weeks we will not have gas and to cover the fee we will be charges for the connection, of £500. They have refused, blaming the estate agent. We has explored this with the agent by way of a complaint and it would seem that the agent did not have a legal obligation to provide us with or sight of the HIP, just to ensure that there is one available. Who is responsible? It seems to me that it is our solicitor, who were negligent in the failure to disclose a material and relevant fact.