There are 2 books in the Starbirth series. The newest book is Shadow Team GB which came out in 2015.

1
Starbirth Assignment Shifter

Book cover of Starbirth Assignment Shifter
An illegal mind-restructuring drug threatens chaos. A black ops team searches for the source. Lock Harford is only one of two ‘Shifters’ – capable of moving through a different dimension using the power of thought and invaluable to military and intelligence organisations – at least until Starbirth appears on the…
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2
Shadow Team GB

Book cover of Shadow Team GB
A nation under threat. No time for defence plans.Shifters attack Buckingham Palace and set their sights on military installations in Britain. The need for a team of enhanced-ability operatives becomes urgent, but the candidates fall far short of Lock’s expectations. Before he can change the situation, the candidates, and his…