Observations of pressure anisotropy effects within semi-collisional magnetized plasma bubbles by Tubman, ER, Joglekar, AS, Bott, AFA, Borghesi, M, Coleman, B, Cooper, G, Danson, CN, Durey, P, Foster, JM, Graham, P, Gregori, G, Gumbrell, ET, Hill, MP, Hodge, T, Kar, S, Kingham, RJ, Read, M, Ridgers, CP, Skidmore, J, Spindloe, C, Thomas, AGR, Treadwell, P, Wilson, S, Willingale, L, Woolsey, NC