Complex sentence: Bryncethin has a bright future as it is a rapidly expanding village, this isn't all good though as in the case with the surrounding villages they are losing thier identities due to the rapid expansion of Bridgend they are becoming just suburbs of the large town.
Split into simpler sentences: Bryncethin has a bright future as it is a rapidly expanding village. This isn't all good though as in the case with the surrounding villages they are losing thier identities due to the rapid expansion of Bridgend--they are becoming just suburbs of the large town.