Webber,
This is an old post I know, but I trust that if you have already invested your £100K, you first made a plan to determine what your desired outcome was, then assessed the risk of the vehicles open to you to achieve that desired outcome. Was the objective:
1 Short term income
2 Long term capital growth
3 Did you have a target annual return on invested capital that you would be satisfied with?
4 Did you consider the risks and rewards of gearing (a mortgage)?
Without these givens, it's not possible to advise how you may invest £100K, but try to stay away from the property hawkers who would sell their own grandmother for a commission.