*Update: I forgot to say that all PS products will be there too! Sorry, forgot to mention that...*

I'm delighted to say that the PS Presents pop-up shop will be back in April, in the same space at The Service, on Savile Row.

For Rubato it will be their first visit to London, with Oliver and Carl bringing their distinctive knitwear, shirts and trousers, as well as hopefully some new launches.

I know there are quite a few readers who have been interested in Rubato, but never been sure how the shorter, V-shaped knitwear and relaxed-fit shirts will work for them. Hopefully this is a good opportunity to try everything in person - whether you buy or not.

We have also done a small collaboration, in that I have asked Rubato to bring back a colour of their chinos - the dark, dark brown that was originally part of the launch range. It will be in my favourite style though, the Officer's Chino, rather than the single-pleat style it was originally made in.

These will be launched at the shop, and initially only available there. I don't have any pictures, but I'll take some before the event and put them on social, so you can see the colour.

As with pretty much everything else Rubato do, I think they're unusual but perfect.

Three other brands will be joining us. First, bespoke glasses maker Lunetier Ludovic, from Brussels (above).

I covered Ludovic here on PS, and have kept in touch with his creations ever since. He's a talented craftsman, but has also branched out into ready-made and MTO glasses, to make the work easier to access.

These will be on display at the pop-up: a small range of RTW frames, and then a comprehensive MTO process where readers can pick their details and materials.

I think this is an interesting avenue for glasses, as most guys don't need bespoke but find it hard to get the precise designs and materials they want ready-made.

The RTW and MTO costs €950 for acetate and €1200 for horn - all made by hand, by Ludovic in Brussels, in the same way as the bespoke product.

Full bespoke is a question of starting from scratch, with ideas and sketches, and costs €1300 and €2200 for those two materials. It involves at least three appointments, plus try-on frames, but impressively, Ludovic says he will do a fitting within two days for anyone coming to the pop-up. He will then be back in late summer.

Second, shirtmaker Jake Wigham will be there with his Ivy-centred made-to-order shirts.

I've yet to cover Jake (above, right), but will correct at that soon. For the moment, I know from others that he makes good, functional MTO shirts in London. He's no bespoke artisan, but deliberately so, and that's reflected in his prices, with shirts starting at £145 with no minimum.

Jake will have sets of shirts to try on for MTO, some special cloths including hand-loomed madras (a little more, £175), and a few ready-made summer designs. The shirts are made in standard collar sizes and a single fit, with only the sleeve-length customisable.

I know it's not always easy to make an appointment with a maker when you don't know whether you want to order. It's easy to feel under pressure.

The nice thing about having makers like Jake in the pop up, I find, is that you can just browse - come and see and try the shirts, chat to him, and get a first impression.

I know that worked for shoemaker Masaru Okuyama last time.

Last but certainly not least is Bentley's Antiques.

Tim Bent (above) has a beautiful shop down on Lower Sloane Street, so he doesn't quite fit into our criteria for brands that you can't otherwise access in London.

But frankly, I've managed to get down to the shop once in the past five years, and I live here. I want Tim's antiques to be on display in Mayfair - especially as I fondly recall when he had a permanent set-up in Gieves & Hawkes at the end of the Row.

It was a perfect fit in that shop, and always felt like an Aladdin's Cave when you walked in, with floor-to-ceiling chestnut leather and gleaming brass. I bought several things over the years, including this card holder, this lovely folio and this alligator case.

It will be wonderful to have a bit of that glamour in the pop-up.

The shop is at the same location as last time, in the back half of The Service at number 32 Savile Row, from Wednesday April 20 to Saturday April 23.

We will be open 10am to 6pm every day, and on the Wednesday there will be some opening-night drinks for everyone, as per usual.

I look forward to seeing everyone, also per usual. Perhaps it will be a balmy spring evening, and we can all mill around outside.

Now wouldn't that be nice?