This was a common sight on verges and in parts of the island this appears to be used as hedging. The pink bits on top of the cactus are the fruit.

The yellow flower is Oxalis pes-caprae (Bermuda Buttercup), the thistle is Galactites tomentosa (Boar Thistle) and the pink flowers are the last on a stem of Asphodelus aestivus (Summer Asphodel).