did not open the hive to inspect the hive after the winter.
Find an opportunity on a windless day at 12C to check briefly for eggs & worker brood. The queen must have space to lay; if winter stores limit her then the recipes below are for inevitable April swarming.
quite a few hives lacking space with pollen and early nectar coming in
reporting strong colonies with too much food and little space for the queen to lay
Take out one or two frames of stores (keep in a sealed box for later) and add one or two frames of drawn comb or foundation at the edge of the brood nest.
checked the amount of fondant left which is above the super and provided a little more fondant
You're adding fondant when many of us are removing stores in response to incoming spring nectar. Heft the hive with one hand. Heavy? Better remove the fondant!
Down south a lot of nectar is coming in (dark, not sure) and I was scraping honey from nucs yesterday, taking out a frame of stores and adding foundation.
What is in flower in Manchester, and is it going into your combs? If bees are storing fondant then a mixture of that and fresh nectar will mean that you cannot call it honey.
Queen excluder on or off? If they have the run of 1.5 boxes the extra space may buy you time, but have a brood box & frames ready to double brood next month.
At this time of year colonies expand stratospherically and the beekeeper must read the signs and act. I get the impression, John, that you're feeling your way and hope that textbook guidance will be enough; in reality, flexibility and rapid response is the key for the next three months.
Truth is that bees are infinitely variable and yours may have either a drone laying queen (lost cause at this time of year) or are preparing queen cells (swarms have been known in January). Until you open up you won't know and cannot make informed decisions.