Okay a quick research reveals there are dig tech forensic forums so asking their advice is a good idea.
http://www.forensicfocus.com/Forums/viewforum/f=1/
There are vids of for example encase on youtube, some have 175,000 so making a channel and posting your top tips weekly would be a good project, you have web skills so making a forum would be a breeze with free software out there. That would look good on a cv.
If you plan to give evidence in court based on your report work formal expert witness training would be a good idea. This is exceptionally good training, lets just say they know how to charge
http://www.bondsolon.com/expert-witness.aspx
Studying formally sounds a good idea, you need a senior mentor or two to help you determine which is the right one for your future, not just in your companies best interest, there are lots
http://www2.mmu.ac.uk/study/undergraduate/courses/2016/13055/ you can also contact them and ask for their reading list and - you guessed it - read it!
Like Sir Dowie said to increase your knowledge you can do a lot that the spoonfeeders are not doing and if you record it dilligently it is impressive. There are lots of online researches, journals, text books (secondhand amazon, ebay) youtube, to read and document as part of your ongoing CPD. Keep an excel spread sheet with your CPD on:
Date / resource / topic / time / verifiable or private study / organiser/self / location
Like that, google docs is good cos you can update it. This could be inhouse training - document it for your ever increasing cv.
What about the Chartered Insitute for IT? Can you join?
Naturally formal qualifications are necessary to qualify your opinion within reports. But your cv and x years of experience in x also helps.
I just finished a Diploma in Forensic Medicine. The government has cut back on forensics, there is more inhouse Police science labs, and private companies. In the ever changing IT field - what are the top 10 things that law enforcement are looking for? Do you know? Is it possible to be specialist in some wierd difficult thing that only you and a few others can do? Like recover a fire damaged HDD or mob phone data (I have no idea if this is true I just made it up). One thing for sure IT is not going away and it will encompas everything forever.
I think that you need to look carefully at how you will earn a living from this at aged 30, 40 50 60? Are you going to be an employee or a business owner.
Whilst it sounds exciting but are folk are doing forensic science at UCLAN etc actually aware if there are any highly paid jobs out there once they get their certificate? I wonder!
You need a background in the scientific method and statistics.
You can register as an Expert Witness (UK register of EWs).
A formal course, degree, MSc sound good but you need a someone who knows their stuff to advise you, and advise you impartially.
Ask your current employee to set you tasks and projects.
Over to you.