Project manager asks me to do things not specified in my contract - is it legal?

[WTFH]

As per the title, I’ve been asked to do things that are not specified in the contract and I’m worried it will put me inside IR35.
My contract specifies that I work on the system which is replacing their old system.
Can I reject their requests as it is illegal and puts me inside IR35?
The contract is very clear, I work on systems, I replace old with new, working, system that is more expensive delivers modern opportunities compared to their antiquated system.

So, the Project Manager has told me the wine budget and asked me to choose 2 sets of wine, one that I would be happy to drink and one that I would be happy to drink when drunk.
This is not in my contract.
1. Is it legal for them to ask me?
2. Does this put me inside IR35?
3. Does IR35 apply outside office hours when you’re away from home
4. Does IR35 apply when the PM has discovered you know a good wine, not just a good label?
5. Should I ask my accountant or lawyer first?

I only want people who I think are as good as me to reply, otherwise I shall be most put out.

[Protagoras]

Haven’t you heard? Anything you don’t like must naturally be illegal.

[cojak]

Bloody hell - call yourself a contractor?

Ask your accountant, shout if necessary if he's not on the same table.

[woody1]

Hey, for the right day rate, I'd go down on the PM.

[Uncle Albert]

Hey, for the right day rate, I'd go down on the PM.

[vetran]

after 4 bottles you won't care, your liver might!

[BolshieBastard]

Shouldnt be in Contracting?!

[ladymuck]

What you should do is raise a variation to the contract.

This should include all the steps involved in fulfilling the request and the costs incurred both in procuring samples and for your time in testing and making your final selections.

Submit this to the client with a with your quote for the ad-hoc piece of work.

Your job is billing and this is simply a new revenue stream you can exploit.

If you were a real contractor, you'd know this.

[vetran]

If you can't sit down afterwards then its probably immoral!