This post comes with a 'yes I know we are very fortunate warning': 
We've inherited 50K and are a bit stumped about what to do with it.
Background:
No debts except mortgage (250K on a house worth £1m).
One student loan £9K outstanding.
We'd love an investment property nearby that we could manage ourselves but we don't quite have the 30% deposit required for BTL mortgage. A 2 bed flat around here is £300K.
We could put it in two ISA's but I feel there must be a better way to make the money work a bit harder.
We'd like to be able to access up to £20K of it in an emergency.
Appreciate any advice from anyone more experienced!