OP, assuming you have little knowledge, and just want to get started, have £600 a month to invest, and are prepared to leave it alone for 10-20 years, then just do the following ;
1 - tell the IFA / Spiv / parasite, to sod off and never darken your door again (unless you have left out some important details, then they are just after lining their own pockets, not yours).
2 - open a Stocks & Shares ISA with Vanguard (there are many options for this, but they are a good low cost, easy to use, reputable company for this level of investing).
3 - set up a direct debit / monthly payment, and put it in FTSE Global All Cap Fund.
4 - leave it alone, check it from time to time, but just leave it to do it's 'stuff' while you get on with your life. It will go up, and it will go down, that is the nature of investing.
5 - thank yourself in 10-20 years for being so smart to get started when you did, not getting fleeced by financial cowboys, and have the time and space to decide what you want to do next.
And that advice is free, and will save you £1000's compared to what the IFA will offer you.