Pembrokeshire the foot of this page for a list of communities. Since 2010, Pembrokeshire has returned two Conservative MPs to the Parliament of the United Kingdom at Westminster: Stephen Crabb for Preseli Pembrokeshire and Simon Hart for South Pembrokeshire which is represented jointly with West Carmarthenshire. The corresponding Assembly Members (AMs) returned to the National Assembly for Wales in Cardiff are Paul Davies and Angela Burns respectively, both Conservatives. There are no motorways in Pembrokeshire; the nearest motorway is the M4 from London and South Wales, which terminates at the Pont Abraham services in Carmarthenshire some from Haverfordwest. The A40 crosses
Pembrokeshire to its proximity to the relatively warm Atlantic Ocean. Inland, average temperatures tend to fall 0.5 °C for each 100 metres increase in height. The air pollution rating of Pembrokeshire is "Good", the lowest rating. The rocks in the county were formed between 600 and 290 million years ago. More recent rock formations were eroded when sea levels rose 80 million years ago, at the end of the Cretaceous Period. Around 60 million years ago, the Pembrokeshire landmass emerged through a combination of uplift and falling sea levels; the youngest rocks, from the Carboniferous Period, contain the Pembrokeshire Coalfield. The