Progressing onto the next career level was known to difficult. Basically had to fulfil most the criteria before receiving a promotion. Often people would leave beforehand, since applying for an entirely new job was found to be easier.
A mentioned in other reviews the salary was below industry average. Also appear that the MOD civil servants bore the brunt of the pay cap which was frustrating.
By the nature of the work at Dstl, I was concerned that my skills and experiences would only be useful within the defence related career and not be transferable elsewhere.
The sites were pretty inaccessible and generally located in 'uninteresting' places in the country for a young grad.