Well, there are many approaches to take to eating when traveling, Veebee!
The best way to go is to have people cook for you the way you want to eat but apparently that is not an option for you, so another option is to travel to where people are cooking the way you want to eat.
That also appears to not be in the cards for you, so if you are traveling by automobile, you could carry your kitchen with you but if that is not and option, maybe you can carry some of your foods with you and either eat very little or supplement what they are offering where you will be eating.
Here is an excellent travel guide written by Ilanit Tof called
"Am Macro, can travel!" Wholefoods to go...
If you are not going to take a traveling kitchen with you, then there are some foods that you can travel with as Ilanit has described.
But if you want to eat better than the most common offerings of your locale, you might try some of the nearby vegetarian/vegan restaurant or restaurants with those options:
Health Food Stores & Vegetarian Restaurants in Norwich
NORWICH, NORFOLK Central- East, England, United Kingdom, UK Vegetarian Restaurants & Vegan Restaurants, Raw Food Restaurant, Health Food Stores and Natural Food Markets
Vegetarian restaurants and hotels - nearest to Norwich
Vegetarian Restaurants in Norwich
Unfortunately, macrobiotics has a very small market share of the food and restaurant business, so you are probably not going to find many places to eat macro foods in England.
What meditation centre will you be visiting?
Thank you, very much.
Bruce Paine