Charmless B-decays at LHCb

These proceedings summarise three recent papers from the LHCb Collaboration in the area of charmless b-decays. The branching fraction for the decay $\text{B}_{s}^{0}\rightarrow \phi \phi$ is measured and a search for the highly suppressed decay $\text{B}^{0}\rightarrow \phi \phi$ is performed. The decay $\text{B}_{s}^{0}\rightarrow {\eta}'{\eta}'$ is observed for the first time and the CP asymmetries in the decays $\text{B}^{+}\rightarrow {\eta}'\text{K}^{+}$ and $\text{B}^{+}\rightarrow \phi \text{K}^{+}$ are measured. Finally, the decay $\text{B}^{0}\rightarrow \rho^{0}\rho^{0}$ is observed for the first time and its longitudinal polarisation is measured.