To not flout lockdown rules for FIL Birthday?

[reallyagain]

So DP has planned for us to eat out with FIL for FIL's Birthday. We are in a current 'lockdown' area in England. This is ok so far as FIL lives alone so bubble.

BUT I have just been informed DP's aunt is now also coming. So this would be breaching the rules. I therefore don't want to go. AIBU? DP thinks I am

Minnie I dont seem to have any say in it, so my only choice is to either break the law or not go .

A number of restaurants in the lockdown area were raided last week and I've heard of at least one being closed down

Minnie I dont seem to have any say in it, so my only choice is to either break the law or not go.

You seemed to be happy going when it was just your FIL. Since he’s in a support bubble with someone else, he can’t be in ours so that would have been breaking the rules before your aunt was even thrown in the mix.

The blatant and public mixing of households that so clearly isn't a bubble concerns me both in terms of its ramifications personally and to the small owner managed restaurant

If you don't feel comfortable then don't go.