Here is the text of the government response to the petition I received by email this morning for anyone who hadn't signed and is interested
"HM Government believes the President of the United States should be extended the full courtesy of a State Visit. We look forward to welcoming President Trump once dates and arrangements are finalised.
HM Government recognises the strong views expressed by the many signatories of this petition, but does not support this petition.
During her visit to the United States on 27 January 2017, the Prime Minister, on behalf of Her Majesty the Queen, invited President Trump for a State Visit to the UK later this year. The invitation was accepted. This invitation reflects the importance of the relationship between the United States of America and the United Kingdom. At this stage, final dates have not yet been agreed for the State Visit.
Foreign and Commonwealth Office"