I don't know from my experience, but at a simple check, the company looks legit and it's in business since 1999.
However, they are specialized in recovering data (files) from your hard drive, not your Bitcoin.
This means that:
* while they may get your files, you will still have to find out what to do with those
* there's no guarantee whether they'll try or not to get their hand onto your coins


The problem is that all the information you provided is ambiguous, to say the least:
* you said that you have a seed for Multibit, but it's not a seed for Multibit
* you implied that you had funds in the first Multibit (Classic or HD, who knows?)
If the funds are indeed yours, try to remember if you moved the funds from Multibit to Blockchain.info or from Blockchain.info to Multibit.

That's because the funds could be at Blockchain.info, and then the information you need may be in your old e-mails and you have a chance to get hold of the coins without risking recovery.
If the funds are in Multibit, it could also be of use to tell how you moved the old wallet to the new laptop 3 years ago.