While in general the site choice is defensible, there are a number of issues realting to access which have not been defined. In particulat whether the site would open onto Waterdell Lane or directly onto Half Handkerchief Lane and thence onto London Road which has poor sight lines and is in a 40mph area.
Second, any development on the site should ensure that adequate screening is assured for St Ibbs Lodge and Queenborough houses and also that the demarkation between the site and the Parish Hall is properly secure
Third that the existing public right of way across the site is maintained and enhanced.
Finally, and most importantly, there is a potential Heritage issue with the site. At the eastern corner at the junction of Half Handkerchief and London Road there is an Ice House. These structures, generally dating from the 18th century are becoming rarer and I am unaware of any with reasonable access in the northern part of Hertfordshire. Many have been destroyed. This example is delapidated, but the main chamber is intact and with some work could be renovated and stabilised, and I would suggest that firstly it is protected during the construction work and then is properly secured for the future. It should be noted that there is a deep chamber in the Ice House with no exit, and as such it would constitute a hazzard for children. Therefore the structure should be fitted with a secure door. Further it should be investigated as a possible bat hibernation site, and many have been found in the past to contain significant colonies. With reduced opportunities for hibernation the secure door should be bat friendly.