Should Conservative Julie Marson be worried that Hertford and Stortford voters now have a choice of seven candidates on July 4 including the representatives of two little-known parties? Barry Hensall, of the Heritage Party, and Alliance for Democracy’s Jane Fowler will have to work hard to hold onto their £500 deposit by winning at least 5% of the votes cast. Immigration is top of their agenda. Both the Alliance for Democracy and the Heritage Party have roots in the UK Independence Party, once headed by Nigel Farage before he launched the Brexit Party – now Reform UK. The “socially conservativ…