The main investigation of this thesis is to determine the thermal effect of different urban green systems (UGS) (as trees, living facades) and high albedo pavement at Pedestrian street level in mitigating urban heat island (UHI) and Carbon Dioxide (CO2) reductions in London, the UK.

This thesis quantifies the critical contribution by changing different urban greenery-covering densities (25% and 50%) or applying high albedo pavement in 2018 and future climate scenarios for the 2050 and the 2080 based on London climate change plans.

Therefore, this strategy is designed to motivate pedestrians to walk for more extended periods and further distances during the summer season following the Health Streets Initiative introduced by Transport for London and turning London to the world's biggest national park by the 2050s based on the Mayor of London Plan.